CVE-2026-58102 Vulnerability Analysis & Exploit Details

CVE-2026-58102
Vulnerability Scoring

9.1
/10
Critical Risk

As a catastrophic security flaw, CVE-2026-58102 has severe implications, demanding immediate intervention.

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-2026-58102 Details

Status: Analyzed

Last updated: 🕐 11 Aug 2026, 01:19 UTC
Originally published on: 🕚 13 Jul 2026, 23:16 UTC

Time between publication and last update: 28 days

CVSS Release: version 3

CVSS3 Source

134c704f-9b21-4f2e-91b3-4a467353bcc0

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2026-58102 Vulnerability Summary

CVE-2026-58102: Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow a heap out-of-bounds read via a long certificate extension OID in hv_exts. When building the extension hash (via extensions(), extensions_by_long_name(), extensions_by_oid(), or has_extension_oid()), the code passes OBJ_obj2txt()'s return value as the hash-key length; because that value is the OID's full text length rather than the bytes written to the fixed-size buffer (129 bytes), an OID whose text is longer than the 129-byte buffer causes a read past the allocation, exposing adjacent heap memory as the returned hash key. extensions_by_name() uses the static shortname path and is not affected.

Assessing the Risk of CVE-2026-58102

Access Complexity Graph

The exploitability of CVE-2026-58102 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-2026-58102

With low attack complexity and no required privileges, CVE-2026-58102 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-2026-58102, 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-2026-58102, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2026-58102 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: None
    CVE-2026-58102 poses no threat to data integrity.
  • Availability: High
    CVE-2026-58102 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-58102 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:a:jonasbn:crypt\:\:openssl\:\:x509:0.1:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.1:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.01:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.01:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.2:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.2:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.3:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.3:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.3.1:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.3.1:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.4:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.4:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.5:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.5:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.6:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.6:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.7:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.7:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.8:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.8:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.9:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:0.9:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.0:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.0:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.1:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.1:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.2:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.2:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.3:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.3:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.4:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.4:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.5:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.5:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.6:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.6:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.7:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.7:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.7.1:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.7.1:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.1:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.1:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.2:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.2:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.3:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.3:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.4:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.4:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.5:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.5:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.6:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.6:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.7:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.7:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.8:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.8:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.9:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.9:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.10:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.10:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.11:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.11:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.12:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.12:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.13:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.8.13:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.1:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.1:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.2:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.2:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.3:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.3:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.4:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.4:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.5:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.5:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.6:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.6:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.7:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.7:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.8:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.8:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.9:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.9:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.10:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.10:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.11:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.11:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.12:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.12:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.13:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.13:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.14:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.14:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.15:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:1.9.15:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:2.0.0:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:2.0.0:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:2.0.1:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:2.0.1:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:2.1.1:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:2.1.1:*:*:*:*:perl:*:*
  • cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:2.1.2:*:*:*:*:perl:*:*
    cpe:2.3:a:jonasbn:crypt\:\:openssl\:\:x509:2.1.2:*:*:*:*:perl:*:*

Protect Your Infrastructure against CVE-2026-58102: 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-2026-90474 – MCPHub before 1.0.32 contains an authentication bypass vulnerability in its embedded OAuth 2.0 authorization server where client authentication is ...
  • CVE-2026-90473 – msgpack-java through 0.9.12 contains an integer overflow vulnerability in MessageUnpacker.skipValue() when processing MAP32 containers with large e...
  • CVE-2026-90472 – msgpack-java through 0.9.12 contains a stack overflow vulnerability in MessageUnpacker.unpackValue() that recursively deserializes arrays and maps ...
  • CVE-2026-89172 – Improper protection of physical side channels vulnerability in Microchip AN1044, Microchip AN953, and Microchip SW300052. This issue affects AN104...
  • CVE-2026-85200 – The GEO my WP plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 4.5.5.3 via the gmw_posts_locator_aj...