VULNERABILITY INTELLIGENCE
CVE-2021-45960
CVSS score8.8 HIGH
EPSS probability4.67%
CISA KEVNot currently listed
Published2022-01-01
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).
Weakness classification
- CWE-682: Incorrect Calculation
Primary references
- cve@mitre.org — Exploit, Mailing List, Third Party Advisory
- cve@mitre.org — Issue Tracking, Permissions Required, Third Party Advisory
- cve@mitre.org — Patch, Third Party Advisory
- cve@mitre.org — Exploit, Issue Tracking, Patch, Third Party Advisory
- cve@mitre.org — Patch, Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Issue Tracking, Third Party Advisory
- cve@mitre.org — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Mailing List, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Permissions Required, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory