SWFTools commit 772e55a2 was discovered to contain a segmentation violation via MovieAddFrame at /src/gif2swf.c.

published 2022-09-20 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-37985

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 17 mo ago (2025-05-28)

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/matthiaskramm/swftools/issues/181 referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/Cvjark/Poc/blob/main/swftools/gif2swf/CVE-2022-35087.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Classification

Weakness

CWE-125 Out-of-bounds Read
CWE-787 Out-of-bounds Write
CWE-476 NULL Pointer Dereference

References

github.com /matthiaskramm/swftools/issues/181
exploit, issue-tracking, third-party-advisory
github.com /Cvjark/Poc/blob/main/swftools/gif2swf/CVE-2022-35087.md
exploit, third-party-advisory

Sources

CVE List CVE-2022-35087
NVD CVE-2022-35087

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary