CVE-2026-9265
CVE-2026-9265 is a critical-severity vulnerability with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- EPSS exploit prediction: 0% (28th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-38103
- Weakness: CWE-125
- Published:
- Last modified:
Description
Crypt::OpenSSL::PKCS12 versions before 1.96 for Perl permits a heap OOB read in print_attribute UTF8STRING path. print_attribute() copies a UTF8STRING ASN.1 attribute value into a heap buffer sized exactly to its declared length via strncpy, leaving no NUL terminator. Downstream callers run strlen() on the result and pass the inflated length to newSVpvn(), copying attacker-influenced adjacent heap bytes into a Perl scalar.
Frequently asked questions
- What is CVE-2026-9265?
- Crypt::OpenSSL::PKCS12 versions before 1.96 for Perl permits a heap OOB read in print_attribute UTF8STRING path. print_attribute() copies a UTF8STRING ASN.1 attribute value into a heap buffer sized exactly to its declared length via strncpy, leaving no NUL terminator. Downstream callers run strlen() on the result and pass the inflated length to newSVpvn(), copying attacker-influenced adjacent heap bytes into a Perl scalar.
- How severe is CVE-2026-9265?
- CVE-2026-9265 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
- Is CVE-2026-9265 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-9265?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-9265 have an EU (EUVD) identifier?
- Yes. CVE-2026-9265 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38103.
- When was CVE-2026-9265 published?
- CVE-2026-9265 was published on 2026-06-20 and last updated on 2026-06-22.
References
- https://github.com/dsully/perl-crypt-openssl-pkcs12/commit/a7bd2f319fa8aab8177b3d767ea06dd85ceb3173.patch
- https://github.com/dsully/perl-crypt-openssl-pkcs12/issues/55
- https://metacpan.org/release/JONASBN/Crypt-OpenSSL-PKCS12-1.96/source/Changes.md
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