CVE-2019-3573 json
In libsixel v1.8.2, there is an infinite loop in the function sixel_decode_raw_impl() in the file fromsixel.c, as demonstrated by sixel2png.
published 2019-01-02 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-13209
- cvss
- 5.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
In libsixel v1.8.2, there is an infinite loop in the function sixel_decode_raw_impl() in the file fromsixel.c, as demonstrated by sixel2png.
Patch / fix
- libsixel Debian 14, Debian 13, Debian 12 1.8.2-2
debian advisories DEBIAN-CVE-2019-3573
Exploit prediction
0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/TeamSeri0us/pocs/tree/master/libsixel referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/saitoha/libsixel/issues/83 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.5 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-835 Loop with Unreachable Exit Condition
References
-
github.com
/TeamSeri0us/pocs/tree/master/libsixel
exploit, third-party-advisory
-
github.com
/saitoha/libsixel/issues/83
exploit, third-party-advisory
Sources
- CVE List CVE-2019-3573
- NVD CVE-2019-3573
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.