Out-of-bounds write in GnuTLS - CVE-2026-42015
Published: April 30, 2026
Vulnerability identifier: #VU128578
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-42015
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
GnuTLS
GnuTLS
Software vendor:
GnuTLS
GnuTLS
Description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds write in the PKCS#12 bag handling code when appending to a PKCS#12 bag that already contains 32 elements. A remote attacker can supply crafted PKCS#12 data to cause a denial of service.
Remediation
Install security update from vendor's website.