Buffer overflow in Nullsoft Winamp

CVE-2014-3442

Winamp 5.666 and earlier allows remote attackers to cause a denial of service (memory corruption and crash) via a malformed .FLV file, related to f263.w5s.

Vulnerability class: Buffer Overflow

Published 2014-05-23 · last modified 2026-06-17.

CVSS v2 metric

CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.028 (85.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000

Affected products

Nullsoft Winamp — versions 5.0, 5.01, 5.02

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

exchange.xforce.ibmcloud.com/vulnerabilities/93173 (vdb-entry)
packetstormsecurity.com/files/126636 (Exploit)
www.securityfocus.com/bid/67429 (Exploit, vdb-entry)