CVE-2026-58082 (Critical) detected in src4.0.4

[mend-bolt-for-github]

CVE-2026-58082 - Critical Severity Vulnerability

Vulnerable Library - src4.0.4

Library home page: https://github.com/MidnightBSD/src.git

Found in base branches: stable/4.0, master

Vulnerable Source Files (1)

/lib/libiconv_modules/ISO2022/citrus_iso2022.c

Vulnerability Details

The ISO-2022 encoding module used a stack buffer sized to MB_LEN_MAX (6 bytes) for intermediate character output. Some ISO-2022 variants can require up to 10 bytes per character, in which case conversions can trigger a stack buffer overflow of up to four bytes.
An application that uses iconv(3) to convert untrusted input to or from one of the affected encodings may be vulnerable to buffer overflows if it uses one of the affected encoding modules.

Publish Date: 2026-08-19

URL: CVE-2026-58082

CVSS 3 Score Details (9.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2026-08-19

Fix Resolution: https://github.com/freebsd/freebsd-src.git - release/14.3.0-p16,https://github.com/freebsd/freebsd-src.git - release/15.0.0-p11,https://github.com/freebsd/freebsd-src.git - release/14.4.0-p7,https://github.com/freebsd/freebsd-src.git - release/15.1.0-p1

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