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CVE-2026-17510 JONASBN CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-09T02:16:34.117Z and has not been modified since then. The vulnerability exists in the print_attribute function of Crypt::OpenSSL::PKCS12 versions before 1.98 for Perl, where a zero-length BMPSTRING attribute causes a NULL pointer dereference. The ASN.1 decoder accepts zero-length BMPSTRING values, allowing the exploit. Other string types like UTF8STRING, OCTET STRING, and BIT STRING are unaffected due to different sizing calculations. Any caller that passes an untrusted PKCS#12 file to info_as_hash() can crash the process. Users of Crypt::OpenSSL::PKCS12 versions before 1.98 for Perl, especially those handling untrusted PKCS#12 files, should be aware of this vulnerability and take necessary actions to mitigate the risk.

Vendor
JONASBN
Product
Crypt::OpenSSL::PKCS12
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-09
Original CVE updated
2026-08-26
Advisory published
2026-08-09
Advisory updated
2026-08-26

Who should care

Users of Crypt::OpenSSL::PKCS12 versions before 1.98 for Perl, especially those handling untrusted PKCS#12 files, should be aware of this vulnerability and take necessary actions to mitigate the risk.

Technical summary

The vulnerability exists in the print_attribute function of Crypt::OpenSSL::PKCS12 versions before 1.98 for Perl. A zero-length BMPSTRING attribute causes a NULL pointer dereference. The ASN.1 decoder accepts zero-length BMPSTRING values, allowing the exploit. Other string types like UTF8STRING, OCTET STRING, and BIT STRING are unaffected due to different sizing calculations. Any caller that passes an untrusted PKCS#12 file to info_as_hash() can crash the process.

Defensive priority

This vulnerability allows a NULL pointer dereference in the print_attribute function of Crypt::OpenSSL::PKCS12 versions before 1.98 for Perl, which can be exploited by passing an untrusted PKCS#12 file to info_as_hash().

Recommended defensive actions

  • Inventory and verify affected systems running Crypt::OpenSSL::PKCS12 versions before 1.98 for Perl.
  • Apply the vendor remediation by updating to version 1.98 or later.
  • Implement compensating controls such as validating and sanitizing input PKCS#12 files.
  • Monitor for suspicious activity related to untrusted PKCS#12 files.
  • Exception tracking for any system that cannot be updated immediately.

Evidence notes

The vulnerability exists in the print_attribute function where a zero-length BMPSTRING attribute causes a NULL pointer dereference. The ASN.1 decoder accepts zero-length BMPSTRING values, allowing the exploit. Other string types like UTF8STRING, OCTET STRING, and BIT STRING are unaffected due to different sizing calculations.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-17510 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-17510

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-17510 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-17510

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://github.com/dsully/perl-crypt-openssl-pkcs12/commit/6cb282d8d8e8ded4859551cd2d3cfa7c6028ce48.patch

    9b29abf9-4ab0-4765-b253-1875cd9b441e

  • Source reference

    Unverified legacy reference

    URL: https://metacpan.org/release/JONASBN/Crypt-OpenSSL-PKCS12-1.98/source/Changes.md

    9b29abf9-4ab0-4765-b253-1875cd9b441e

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.