CVE-2026-57165 Vulnerability Analysis & Exploit Details

CVE-2026-57165
Vulnerability Scoring

5.3
/10
Significant Risk

Security assessments indicate that CVE-2026-57165 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: None
    No 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-2026-57165 Details

Status: Analyzed

Last updated: 🕟 11 Sep 2026, 16:53 UTC
Originally published on: 🕕 04 Sep 2026, 18:17 UTC

Time between publication and last update: 6 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2026-57165 Vulnerability Summary

CVE-2026-57165: PJSIP is a free and open source multimedia communication library written in C. Prior to commit 628b716, a stack buffer overflow exists in the PJLIB-UTIL telnet CLI front-end when redrawing the command line during history recall (handle_up_down() in cli_telnet.c). This affects only applications that enable the telnet CLI front-end (same gating as the related CLI issue). The line-redraw sequence for a recalled history entry can accumulate more data than a fixed-size stack buffer holds, which may lead to application termination. Exploitation requires access to the unauthenticated telnet CLI, which already permits arbitrary CLI commands, so the additional impact is limited. Applications that do not enable the telnet CLI front-end are not affected. This issue has been patched via commit 628b716.

Assessing the Risk of CVE-2026-57165

Access Complexity Graph

The exploitability of CVE-2026-57165 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-2026-57165

With low attack complexity and no required privileges, CVE-2026-57165 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

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-2026-57165, 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-2026-57165, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2026-57165 has no significant impact on data confidentiality.
  • Integrity: None
    CVE-2026-57165 poses no threat to data integrity.
  • Availability: Low
    CVE-2026-57165 may slightly degrade system performance without fully affecting service availability.

CVE-2026-57165 References

External References

CWE Common Weakness Enumeration

CWE-121

Vulnerable Configurations

  • cpe:2.3:a:teluu:pjsip:0.5.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.2:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.2:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.3:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.3:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.4:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.4:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.6:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.6:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.7:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.7:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.8:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.8:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.9:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.9:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.10:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.10:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.10.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.10.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.10.2:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.10.2:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.10.3:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.10.3:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.5.10.4:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.5.10.4:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.7.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.7.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:0.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:0.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.0:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.0:rc4:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.0:rc4:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.2:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.3:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.3:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.4:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.4:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.4.5:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.4.5:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.5:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.5:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.5.5:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.5.5:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.6:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.6:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.7:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.7:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.8:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.8:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.8.5:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.8.5:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.8.10:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.8.10:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.10:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.10:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.12:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.12:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.14:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.14:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.14.2:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.14.2:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:1.16:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:1.16:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.0:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.0:rc:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.0:rc:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.0:beta:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.0:beta:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.0:alpha:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.0:alpha:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.0:alpha2:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.0:alpha2:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.2:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.3:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.3:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.4:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.4:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.4.5:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.4.5:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.5:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.5:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.5.5:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.5.5:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.6:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.6:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.7:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.7:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.8:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.8:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.9:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.9:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.10:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.10:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.11:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.11:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.11.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.11.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.12:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.12:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.12.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.12.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.13:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.13:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.13.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.13.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.14:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.14:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.14.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.14.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.15:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.15:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.15.1:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.15.1:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.16:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.16:*:*:*:*:*:*:*
  • cpe:2.3:a:teluu:pjsip:2.17:*:*:*:*:*:*:*
    cpe:2.3:a:teluu:pjsip:2.17:*:*:*:*:*:*:*

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