CVE WatchOct 14, 2026

CVE-2022-42898

PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution

CVSS

8.8

High

EPSS

6.9%

p94

KEV

—

Exploit Today

0-100

Published: Dec 25, 2022 · Last modified: Oct 14, 2026 · CWE-190

EPSS · 30d

6.2%EPSS · 30 days6.9%

2026-10-032026-10-31

Technical description

PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."

Official references

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