Memory Corruption Vulnerability in GnuTLS PKCS#12 Bag Element
CVE-2026-42015

5.3MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
26 May 2026

What is CVE-2026-42015?

A memory corruption issue exists in GnuTLS relating to an off-by-one error in the bounds checking of the PKCS#12 bag element. When an attacker appends to a PKCS#12 bag that already contains 32 elements, they can exploit this flaw to write past the limits of the internal array. This could lead to instability or denial of service, creating a risk for applications that rely on GnuTLS for secure communications. Users should take appropriate measures to upgrade or patch affected versions to mitigate these risks.

References

https://access.redhat.com/security/cve/CVE-2026-42015
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2467678
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Zou Dikai for reporting this issue.
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