CVE-2002-0059: The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and packages, ca...

Security readout for executives and security teams

CVE-2002-0059 is a memory handling flaw in zlib 1.1.3 and earlier. Because zlib is embedded in many products, malformed compressed data could crash software or, in some contexts, allow local or remote code execution. The main business risk is old or bundled software still carrying the vulnerable library. Exposure is most likely in legacy operating systems, appliances, embedded products, or applications statically bundling zlib 1.1.3 or earlier. The source bundle says zlib is used by many utilities and packages, so product-level exposure depends on each vendor build and advisory. Prioritize remediation where old systems process untrusted compressed content or are internet-facing. This is an older CVE, but the library’s broad reuse makes forgotten bundled copies the practical risk. Mitigation focus: Inventory systems and applications using zlib 1.1.3 or earlier.; Check relevant vendor advisories for supported fixes and replacement packages.; Update vendor packages that include affected zlib versions..

Prepared

Jul 1, 2026, 06:34 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.