Vulnerability · Published Jan 27, 2026 · Assigned by openssl
CVE-2025-69421NULL Pointer Dereference in PKCS12_item_decrypt_d2i_ex function
High 7.5
In plain English
A high-severity null pointer dereference in OpenSSL from OpenSSL. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
Issue summary: Processing a malformed PKCS#12 file can trigger a NULL pointer dereference in the PKCS12_item_decrypt_d2i_ex() function. Impact summary: A NULL pointer dereference can trigger a crash which leads to Denial of Service for an application processing PKCS#12 files. The PKCS12_item_decrypt_d2i_ex() function does not check whether the oct parameter is NULL before dereferencing it. When called from PKCS12_unpack_p7encdata() with a malformed PKCS#12 file, this parameter can be NULL, causing a crash. The vulnerability is limited to Denial of Service and cannot be escalated to achieve code execution or memory disclosure. Exploiting this issue requires an attacker to provide a malformed PKCS#12 file to an application that processes it. For that reason the issue was assessed as Low severity according to our Security Policy. The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the PKCS#12 implementation is outside the OpenSSL FIPS module boundary. OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0, 1.1.1 and 1.0.2 are vulnerable to this issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | openssl | 1:3.5.1-7.el10_1.alma.1 | ALSA-2026:1472 |
| AlmaLinux:9 | openssl | 1:3.5.1-7.el9_7 | ALSA-2026:1473 |
| AlmaLinux:10 | openssl-devel | 1:3.5.1-7.el10_1.alma.1 | ALSA-2026:1472 |
| AlmaLinux:9 | openssl-devel | 1:3.5.1-7.el9_7 | ALSA-2026:1473 |
| AlmaLinux:10 | openssl-libs | 1:3.5.1-7.el10_1.alma.1 | ALSA-2026:1472 |
| AlmaLinux:9 | openssl-libs | 1:3.5.1-7.el9_7 | ALSA-2026:1473 |
| AlmaLinux:10 | openssl-perl | 1:3.5.1-7.el10_1.alma.1 | ALSA-2026:1472 |
| AlmaLinux:9 | openssl-perl | 1:3.5.1-7.el9_7 | ALSA-2026:1473 |
| Alpine:v3.20 | openssl | 3.3.6-r0 | ALPINE-CVE-2025-69421 |
| Alpine:v3.21 | openssl | 3.3.6-r0 | ALPINE-CVE-2025-69421 |
| Alpine:v3.22 | openssl | 3.5.5-r0 | ALPINE-CVE-2025-69421 |
| Alpine:v3.23 | openssl | 3.5.5-r0 | ALPINE-CVE-2025-69421 |
| Alpine:v3.24 | openssl | 3.5.5-r0 | ALPINE-CVE-2025-69421 |
| Debian:12 | openssl | 3.0.18-1~deb12u2 | DSA-6113-1 |
| Debian:12 | openssl | 3.0.18-1~deb12u2 | DEBIAN-CVE-2025-69421 |
| Debian:13 | openssl | 3.5.4-1~deb13u2 | DSA-6113-1 |
| Debian:13 | openssl | 3.5.4-1~deb13u2 | DEBIAN-CVE-2025-69421 |
| Debian:14 | openssl | 3.5.5-1 | DEBIAN-CVE-2025-69421 |
| Rocky Linux:10 | openssl | 1:3.5.1-7.el10_1 | RLSA-2026:1472 |
| Rocky Linux:9 | openssl | 1:3.5.1-7.el9_7 | RLSA-2026:1473 |
| Ubuntu:22.04:LTS | openssl | 3.0.2-0ubuntu1.21 | USN-7980-1 |
| Ubuntu:22.04:LTS | openssl | 3.0.2-0ubuntu1.21 | UBUNTU-CVE-2025-69421 |
| Ubuntu:24.04:LTS | openssl | 3.0.13-0ubuntu3.7 | UBUNTU-CVE-2025-69421 |
| Ubuntu:24.04:LTS | openssl | 3.0.13-0ubuntu3.7 | USN-7980-1 |
| Ubuntu:25.10 | openssl | 3.5.3-1ubuntu3 | UBUNTU-CVE-2025-69421 |
| Ubuntu:25.10 | openssl | 3.5.3-1ubuntu3 | USN-7980-1 |
| Ubuntu:26.04:LTS | openssl | 3.5.5-1ubuntu1 | UBUNTU-CVE-2025-69421 |
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- OpenSSL Advisory vendor-advisory
- 3.6.1 git commit patch
- 3.5.5 git commit patch
- 3.4.4 git commit patch
- 3.3.6 git commit patch
- 3.0.19 git commit patch
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html