[UPDATE] [medium] libpng: Multiple vulnerabilities
A remote, anonymous attacker can exploit multiple vulnerabilities in libpng to execute arbitrary program code or cause a Denial of Service.
CSIRTS triage
- What
- Multiple vulnerabilities allow a remote attacker to execute arbitrary code or cause a Denial of Service.
- Who is affected
- Deployments of libpng are affected by these vulnerabilities.
- Urgency
- Remediation is important due to the potential for code execution and Denial of Service, although exploitation has not been reported.
- Action
- Update to the latest version of libpng.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0870
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Moderate exploitation riskCVE-2026-334161.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 61% of all scored CVEs.
- Low exploitation riskCVE-2026-336360.74% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 51% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-33416 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-33636 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownSamsung Products Multiple Vulnerabilitieshkcert
Recent advisories for libpng
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highCVE-2026-64612: A flaw was found in libcupsfilters and cups-filters. The PNG image reading function creates a …nvd · 2026-07-20
- medium[UPDATE] [medium] libpng: Vulnerability allows code executioncert-bund · 2026-07-16
- medium[UPDATE] [medium] libpng: Vulnerability allows Denial of Service and information disclosurecert-bund · 2026-07-10
- medium[UPDATE] [medium] libpng: Multiple vulnerabilitiescert-bund · 2026-07-10
- mediumCVE-2026-40930: LIBPNG: Chunk smuggling in push-mode APNG parser via unconsumed chunk bodymsrc · 2026-06-09
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