[UPDATE] [medium] libpng: Vulnerability allows Denial of Service and information disclosure

mediumCVE-2025-66293

A remote, anonymous attacker can exploit a vulnerability in libpng to conduct a Denial of Service attack and disclose information.

CSIRTS triage

vendor: libpng product: libpng Denial of service Information disclosure

What: A vulnerability allows Denial of Service and information disclosure.
Who is affected: Remote, anonymous attackers can exploit this vulnerability.
Urgency: Remediation is medium urgency due to the potential for service disruption and data exposure.
Action: Update to the latest version of libpng to address the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-07-10
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-2737

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.

Low exploitation riskCVE-2025-662930.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-66293	coverage & exploitation status	NVD · CVE.org

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.

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