CVE-2026-40930
A remote, anonymous attacker can exploit a vulnerability in libpng to perform a denial of service attack.
CSIRTS triage
- What
- A denial of service vulnerability in libpng allows remote anonymous attackers to crash the application through crafted input.
- Who is affected
- Systems using vulnerable versions of libpng are affected.
- Urgency
- Medium urgency; denial of service impact with no authentication required.
- Action
- Update libpng to the patched version.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-40930
Get an email if CVE-2026-40930 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.
Advisory coverage (3)
- medium[UPDATE] [medium] libpng: Vulnerability enables denial of servicecert-bund · 2026-08-18
- unknownUSN-8639-1: libpng vulnerabilitiesubuntu · 2026-08-17
- mediumCVE-2026-40930: LIBPNG: Chunk smuggling in push-mode APNG parser via unconsumed chunk bodymsrc · 2026-06-09
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-40930)