CVE-2026-22796
MEDIUMCVSS v3
5.3
MEDIUM
EPSS Score
0.1%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Issue summary: A type confusion vulnerability exists in the signature verification of signed PKCS#7 data where an ASN1_TYPE union member is accessed without first validating the type, causing an invalid or NULL pointer dereference when processing malformed PKCS#7 data. Impact summary: An application performing signature verification of PKCS#7 data or calling directly the PKCS7_digest_from_attributes() function can be caused to dereference an invalid or NULL pointer when reading, resulting in a
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 1/27/2026
- Last Modified
- 2/2/2026
Frequently Asked Questions
What is CVE-2026-22796?
Issue summary: A type confusion vulnerability exists in the signature verification of signed PKCS#7 data where an ASN1_TYPE union member is accessed without first validating the type, causing an invalid or NULL pointer dereference when processing malformed PKCS#7 data. Impact summary: An application performing signature verification of PKCS#7 data or calling directly the PKCS7_digest_from_attributes() function can be caused to dereference an invalid or NULL pointer when reading, resulting in a
Is CVE-2026-22796 actively exploited?
Active exploitation of CVE-2026-22796 has not been confirmed. The EPSS score is 0.1%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-22796?
CVE-2026-22796 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string 3.1.
Is CVE-2026-22796 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.