NULL Pointer Dereference Affecting openssl package, versions [3.6.0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published10 Jun 2026
- disclosed9 Jun 2026
- creditJoshua Rogers
Introduced: 9 Jun 2026
NewCVE-2026-42765 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference during OCSP response checking. When a verification chain lacks a self-signed trusted anchor, the issuer of the last certificate is NULL, but the OCSP code accesses the next certificate as the issuer, dereferencing NULL and crashing. Both 509_V_FLAG_OCSP_RESP_CHECK_ALL and X509_V_FLAG_PARTIAL_CHAIN are required and are disabled by default.