VULNERABILITY INTELLIGENCE
CVE-2021-21839
CVSS score8.8 HIGH
EPSS probability2.01%
CISA KEVNot currently listed
Published2021-08-18
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Description
Multiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input can cause an integer overflow due to unchecked arithmetic resulting in a heap-based buffer overflow that causes memory corruption. An attacker can convince a user to open a video to trigger this vulnerability.
Weakness classification
- talos-cna@cisco.com: CWE-680
- nvd@nist.gov: CWE-119
Primary references
- talos-cna@cisco.com — Exploit, Technical Description, Third Party Advisory
- talos-cna@cisco.com — Third Party Advisory
- talos-cna@cisco.com — Exploit, Technical Description, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Technical Description, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Technical Description, Third Party Advisory