SB2026091126 - Denial of service in GNU C Library
Published: September 11, 2026
Security Bulletin ID
SB2026091126
CSH Severity
Medium
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Reachable assertion (CVE-ID: CVE-2026-4046)
CWE-ID: CWE-617 - Reachable Assertion
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a reachable assertion in the iconv function when processing specially crafted input using the IBM1390 or IBM1399 character sets. A remote attacker can supply malicious input remotely to cause a denial of service.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.