CVE-2017-9434 — Crypto++ (aka cryptopp) through 5

Crypto++ (aka cryptopp) through 5.6.5 contains an out-of-bounds read vulnerability in zinflate.cpp in the Inflator filter.

01What is this vulnerability?

Crypto++ (aka cryptopp) through 5.6.5 contains an out-of-bounds read vulnerability in zinflate.cpp in the Inflator filter.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2017-06-05T14:29:00.653
• Last modified: 2026-05-13T00:24:29.033

09References

• openwall.com — http://openwall.com/lists/oss-security/2017/06/06/2
• www.securityfocus.com — http://www.securityfocus.com/bid/99007
• github.com — https://github.com/weidai11/cryptopp/commit/07dbcc3d9644b18e05c1776db2a57fe04d78…
• github.com — https://github.com/weidai11/cryptopp/issues/414
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• openwall.com — http://openwall.com/lists/oss-security/2017/06/06/2
• www.securityfocus.com — http://www.securityfocus.com/bid/99007
• github.com — https://github.com/weidai11/cryptopp/commit/07dbcc3d9644b18e05c1776db2a57fe04d78…
• github.com — https://github.com/weidai11/cryptopp/issues/414
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…