What is CVE-2023-36193?

CVE-2023-36193 is a high-severity vulnerability in Lcdf Gifsicle, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-06-23.

How severe is CVE-2023-36193?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-36193 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Lcdf Gifsicle

CVE-2023-36193

Gifsicle v1.9.3 was discovered to contain a heap buffer overflow via the ambiguity_error component at /src/clp.c.

Vulnerability class: Buffer Overflow

Published 2023-06-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (22.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Lcdf Gifsicle — versions 1.93

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

DiRaltvein/memory-corruption-examples

References

github.com/kohler/gifsicle/issues/191 (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-36193?: CVE-2023-36193 is a high-severity vulnerability in Lcdf Gifsicle, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-06-23.
How severe is CVE-2023-36193?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-36193 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.