Log in / Sign up

Vulnerability details

CVE-2026-33633

kovidgoyal kitty

Kitty has a Heap Buffer Overflow in its Graphics Protocol Handler

CVSS 3.1
7.5High

Official description

Kitty is a cross-platform GPU based terminal. Versions 0.46.2 and below contain a heap buffer overflow in load_image_data() that allows any process which can write to the terminal's stdin to crash kitty immediately. The vulnerability is triggered by a single APC graphics protocol command with a PNG format declaration (f=100) whose payload exceeds twice the initial buffer capacity. The overflow is attacker-controlled in both length and content, causing DoS and potentially escalation to RCE itself. This issue has been fixed in version 0.47.0.

CVSS scores

ScoreVersionSourceVector
7.5High 3.1 CVEProject cvelistV5 (CNA) (GitHub_M) CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

VendorProductVersionsSource
kovidgoyal kitty < 0.47.0 CVEProject cvelistV5 (CNA)

References and advisories

2
Kolun on Telegram @kolunsec Exploited CVEs, key news and a daily digest Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.

Details

Published
2026-05-19
Last updated
2026-05-20
State
Published
Assigner (CNA)
GitHub_M

Exploit prediction (EPSS)

0.37%
Probability of exploitation in 30 days
31.8%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
Proof of concept
Technical impact
Total

Weaknesses (CWE)

  • CWE-122
    Heap-based Buffer Overflow