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[UPDATE] [medium] zlib: Vulnerability enables code execution

mediumCVE-2018-25032
A remote anonymous attacker can exploit a vulnerability in zlib to execute arbitrary code or trigger a denial of service condition.

CSIRTS triage

What
A vulnerability in zlib enables arbitrary code execution or denial of service.
Who is affected
Systems and applications linked against vulnerable zlib versions.
Urgency
Medium: severity rated medium; code execution capability is serious but only affects older versions given CVE age.
Action
Apply zlib security updates and recompile or update dependent applications.

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
2026-08-21
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-2022-0005

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2018-25032coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for zlib

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.

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