VULNERABILITY INTELLIGENCE
CVE-2026-65421
CVSS score6.5 MEDIUM
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-07-30
Last modified2026-10-23
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
The MMS BER decoder contains a flaw in decoding fixed-width BER fields (boolean/integer): an attacker-supplied length value is not validated, causing a read past the end of a heap buffer. This leads to termination of the MMS service process and a denial-of-service condition.
Weakness classification
- ics-cert@hq.dhs.gov: CWE-125