CVE & CISA-KEV Catalog

CVE-2026-8721

CRITICAL
9.8
CVSS v3
NVD

Description

Crypt::OpenSSL::PKCS12 versions through 1.94 for Perl truncates passwords with embedded NULLs. Password parameters in PKCS12.xs are declared char *, which routes through Perl's default typemap to SvPV_nolen. The Perl length is discarded. The C code (or OpenSSL internally) calls strlen() on the buffer. Any password byte at or after the first NULL is silently dropped. Binary / KDF-derived / HMAC-derived passwords lose entropy without any warnings.

CWE-170

How to fix

Remediation Available
libcrypt-openssl-pkcs12-perlDebian
Fixed in:1.95-1CVE-2026-8721

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.45%probability of exploitation in 30 days
36thpercentile

Low risk: more likely to be exploited than 36% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-170 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2021-22931Critical9.822%-Fix
CVE-2019-11045Low3.78.8%-Fix
CVE-2019-11044Low3.75.1%-Fix
CVE-2019-8275Critical9.84.0%-Fix
CVE-2020-27736Medium6.53.6%-Fix
CVE-2021-31886Critical9.83.0%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-18.