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OpenSSL CVE-2026-22795

MEDIUM
Improper Check for Unusual or Exceptional Conditions (CWE-754)
2026-01-27 openssl-security@openssl.org
OpenSSL Denial Of Service
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SUSE
MEDIUM
qualitative
Red Hat
5.5 LOW
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
Patch released
Feb 02, 2026 - 18:41 nvd
Patch available
CVE Published
Jan 27, 2026 - 16:16 nvd
MEDIUM 5.5

DescriptionCVE.org

Issue summary: An invalid or NULL pointer dereference can happen in an application processing a malformed PKCS#12 file.

Impact summary: An application processing a malformed PKCS#12 file can be caused to dereference an invalid or NULL pointer on memory read, resulting in a Denial of Service.

A type confusion vulnerability exists in PKCS#12 parsing code where an ASN1_TYPE union member is accessed without first validating the type, causing an invalid pointer read.

The location is constrained to a 1-byte address space, meaning any attempted pointer manipulation can only target addresses between 0x00 and 0xFF. This range corresponds to the zero page, which is unmapped on most modern operating systems and will reliably result in a crash, leading only to a Denial of Service. Exploiting this issue also requires a user or application to process a maliciously crafted PKCS#12 file. It is uncommon to accept untrusted PKCS#12 files in applications as they are usually used to store private keys which are trusted by definition. For these reasons, the issue was assessed as Low severity.

The FIPS modules in 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the PKCS12 implementation is outside the OpenSSL FIPS module boundary.

OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0 and 1.1.1 are vulnerable to this issue.

OpenSSL 1.0.2 is not affected by this issue.

AnalysisAI

Processing a malformed PKCS#12 file in OpenSSL and related TLS libraries can trigger a null pointer dereference due to improper type validation in ASN.1 parsing, causing applications to crash. This vulnerability requires local user interaction to exploit and results only in denial of service, with no impact on data confidentiality or integrity. A patch is available to address this medium-severity issue.

Technical ContextAI

Classified as CWE-754 (Improper Check for Unusual or Exceptional Conditions). Affects the a Denial of component of Openssl. Issue summary: An invalid or NULL pointer dereference can happen in an application processing a malformed PKCS#12 file.

Impact summary: An application processing a malformed PKCS#12 file can be caused to dereference an invalid or NULL pointer on memory read, resulting in a Denial of Service.

A type confusion vulnerability exists in PKCS#12 parsing code where an ASN1_TYPE union member is accessed without first validating the type, causing an invalid pointer read.

The location is constrained to

RemediationAI

A vendor patch is available — apply it immediately.

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Vendor StatusVendor

SUSE

Severity: Medium
Product Status
Container private-registry/harbor-portal:1.1.1-1.16 Container suse/multi-linux-manager/5.1/x86_64/server-postgresql:5.1.2.6.13.1 Image server-postgresql-image Affected
Container suse/manager/4.3/proxy-httpd:4.3.16.2.9.73.10 Container suse/manager/4.3/proxy-squid:4.3.16.2.9.72.8 Container suse/manager/4.3/proxy-ssh:4.3.16.2.9.63.8 Affected
Container suse/manager/4.3/proxy-salt-broker:4.3.16.2.9.63.10 Container suse/manager/4.3/proxy-tftpd:4.3.16.2.9.63.9 Affected
Container suse/manager/5.0/x86_64/proxy-httpd:latest Container suse/manager/5.0/x86_64/proxy-ssh:latest Container suse/manager/5.0/x86_64/server-migration-14-16:latest Affected
Container suse/manager/5.0/x86_64/proxy-salt-broker:latest Container suse/manager/5.0/x86_64/proxy-tftpd:latest Container suse/manager/5.0/x86_64/server:latest Affected

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CVE-2026-22795 vulnerability details – vuln.today
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