CVE-2026-18857 Vulnerability Analysis & Exploit Details

CVE-2026-18857
Vulnerability Scoring

3.4
/10
Moderate Risk

Exploiting CVE-2026-18857 requires specific conditions, leading to a moderate security impact.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: High
    High-level privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2026-18857 Details

Status: Analyzed

Last updated: 🕟 30 Sep 2026, 16:48 UTC
Originally published on: 🕑 24 Sep 2026, 14:17 UTC

Time between publication and last update: 6 days

CVSS Release: version 3

CVSS3 Source

psirt@us.ibm.com

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:L

CVE-2026-18857 Vulnerability Summary

CVE-2026-18857: IBM OPENBMC FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the BMC firmware management interface. The host system can cause the BMC firmware management service to crash or allow a limited amount of BMC internal memory to be read, resulting in a confidentiality and availability impact to the managed system.

Assessing the Risk of CVE-2026-18857

Access Complexity Graph

The exploitability of CVE-2026-18857 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-18857

The exploitability of CVE-2026-18857 is influenced by multiple factors. Security teams should analyze system configurations and apply appropriate countermeasures to mitigate threats.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-18857, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-18857, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: Low
    CVE-2026-18857 could lead to minor leaks of non-critical information without major privacy breaches.
  • Integrity: None
    CVE-2026-18857 poses no threat to data integrity.
  • Availability: Low
    CVE-2026-18857 may slightly degrade system performance without fully affecting service availability.

CVE-2026-18857 References

External References

CWE Common Weakness Enumeration

CWE-125

CAPEC Common Attack Pattern Enumeration and Classification

  • Overread Buffers CAPEC-540 An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Vulnerable Configurations

  • cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1110.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1110.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1110.30:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1110.30:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1110.31:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1110.31:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1120.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1120.00:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1122_\(9824-22a\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1122_\(9824-22a\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1110.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1110.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1110.30:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1110.30:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1110.31:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1110.31:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1120.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1120.00:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1124_\(9824-42a\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1124_\(9824-42a\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1110.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1110.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1110.30:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1110.30:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1110.31:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1110.31:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1120.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1120.00:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1122s_\(9824-22b\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1122s_\(9824-22b\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1110.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1110.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1110.30:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1110.30:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1110.31:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1110.31:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1120.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1120.00:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1114_\(9824-41b\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1114_\(9824-41b\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1110.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1110.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1110.30:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1110.30:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1110.31:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1110.31:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1120.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1120.00:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_l1122_\(9856-22h\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_l1122_\(9856-22h\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1110.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1110.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1110.30:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1110.30:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1110.31:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1110.31:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1120.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1120.00:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_l1124_\(9856-42h\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_l1124_\(9856-42h\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1110.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1110.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1110.30:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1110.30:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1110.31:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1110.31:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1120.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1120.00:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_e1150_\(9043-mru\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_e1150_\(9043-mru\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1112_\(9242-21b\)_firmware:fw1120.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1112_\(9242-21b\)_firmware:fw1120.00:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1112_\(9242-21b\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1112_\(9242-21b\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1112_\(9242-21t\)_firmware:fw1120.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1112_\(9242-21t\)_firmware:fw1120.00:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1112_\(9242-21t\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1112_\(9242-21t\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1022_\(9105-22a\)_firmware:fw1060.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1022_\(9105-22a\)_firmware:fw1060.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1022_\(9105-22a\)_firmware:fw1060.72:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1022_\(9105-22a\)_firmware:fw1060.72:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1022_\(9105-22a\)_firmware:fw1060.81:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1022_\(9105-22a\)_firmware:fw1060.81:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1022_\(9105-22a\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1022_\(9105-22a\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1024_\(9105-42a\)_firmware:fw1060.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1024_\(9105-42a\)_firmware:fw1060.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1024_\(9105-42a\)_firmware:fw1060.72:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1024_\(9105-42a\)_firmware:fw1060.72:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1024_\(9105-42a\)_firmware:fw1060.81:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1024_\(9105-42a\)_firmware:fw1060.81:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1024_\(9105-42a\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1024_\(9105-42a\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1022s_\(9105-22b\)_firmware:fw1060.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1022s_\(9105-22b\)_firmware:fw1060.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1022s_\(9105-22b\)_firmware:fw1060.72:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1022s_\(9105-22b\)_firmware:fw1060.72:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1022s_\(9105-22b\)_firmware:fw1060.81:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1022s_\(9105-22b\)_firmware:fw1060.81:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1022s_\(9105-22b\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1022s_\(9105-22b\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1014_\(9105-41b\)_firmware:fw1060.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1014_\(9105-41b\)_firmware:fw1060.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1014_\(9105-41b\)_firmware:fw1060.72:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1014_\(9105-41b\)_firmware:fw1060.72:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1014_\(9105-41b\)_firmware:fw1060.81:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1014_\(9105-41b\)_firmware:fw1060.81:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1014_\(9105-41b\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1014_\(9105-41b\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1022_\(9786-22h\)_firmware:fw1060.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1022_\(9786-22h\)_firmware:fw1060.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1022_\(9786-22h\)_firmware:fw1060.72:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1022_\(9786-22h\)_firmware:fw1060.72:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1022_\(9786-22h\)_firmware:fw1060.81:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1022_\(9786-22h\)_firmware:fw1060.81:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_l1022_\(9786-22h\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_l1022_\(9786-22h\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1024_\(9786-42h\)_firmware:fw1060.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1024_\(9786-42h\)_firmware:fw1060.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1024_\(9786-42h\)_firmware:fw1060.72:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1024_\(9786-42h\)_firmware:fw1060.72:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_l1024_\(9786-42h\)_firmware:fw1060.81:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_l1024_\(9786-42h\)_firmware:fw1060.81:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_l1024_\(9786-42h\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_l1024_\(9786-42h\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_e1050_\(9043-mrx\)_firmware:fw1060.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_e1050_\(9043-mrx\)_firmware:fw1060.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_e1050_\(9043-mrx\)_firmware:fw1060.72:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_e1050_\(9043-mrx\)_firmware:fw1060.72:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_e1050_\(9043-mrx\)_firmware:fw1060.81:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_e1050_\(9043-mrx\)_firmware:fw1060.81:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_e1050_\(9043-mrx\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_e1050_\(9043-mrx\):-:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1012_\(9028-21b\)_firmware:fw1060.00:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1012_\(9028-21b\)_firmware:fw1060.00:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1012_\(9028-21b\)_firmware:fw1060.72:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1012_\(9028-21b\)_firmware:fw1060.72:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:power_system_s1012_\(9028-21b\)_firmware:fw1060.81:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:power_system_s1012_\(9028-21b\)_firmware:fw1060.81:*:*:*:*:*:*:*
  • cpe:2.3:h:ibm:power_system_s1012_\(9028-21b\):-:*:*:*:*:*:*:*
    cpe:2.3:h:ibm:power_system_s1012_\(9028-21b\):-:*:*:*:*:*:*:*

Protect Your Infrastructure against CVE-2026-18857: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2026-97219 – The MStore API WordPress plugin before 4.22.1 does not restrict which fields of an order a customer may update, allowing any authenticated user wit...
  • CVE-2026-93698 – Insufficient validation allows arbitrary commands to be executed via the Multilang adminbin.
  • CVE-2026-93697 – There is a stored XSS vulnerability allowing arbitrary code execution in the WHM Mass Modify Accounts interface.
  • CVE-2026-93029 – There is a stored XSS vulnerability allowing arbitrary code execution in the WHM Manage SSL Hosts interface.
  • CVE-2026-92924 – The Unlimited Elements for Elementor WordPress plugin before 2.0.21 does not check that a request to render widget output comes from a user allowed...