NULL Pointer Dereference Affecting openssl package, versions [3.0.5,3.1.0)
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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- published26 Aug 2026
- disclosed25 Aug 2026
- creditYing Dong,, Bhabani Sankar Das
Introduced: 25 Aug 2026
NewCVE-2026-63076 (opens in a new tab)How to fix?
Upgrade openssl to version 3.1.0 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference due to insufficient type checking in ossl_cmp_calc_protection in crypto/cmp/cmp_protect.c. An attacker can crash a CMP server or client by sending a crafted PBM-protected message whose protectionAlg parameter uses the wrong ASN.1 type, causing the code to treat the malformed parameter as a PBMParameter and dereference an invalid pointer. This breaks CMP message processing for applications that accept PBM-protected CMP traffic, resulting in a denial of service.