Full Report
OpenSSL security advisory (AV26-329)
Analysis Summary
# Vulnerability: OpenSSL Multiple Vulnerabilities (April 2026)
## CVE Details
*Note: The source document provides the security advisory (AV26-329) but does not list specific CVE IDs for this future-dated advisory. Users should refer to the OpenSSL vulnerability portal for specific individual CVE assignments.*
- **CVE ID:** CVE-pending-2026-X
- **CVSS Score:** Unknown (Severity varies by specific flaw)
- **CWE:** Typically includes Buffer Overflows (CWE-119) or Denial of Service (CWE-400) indicators common to OpenSSL releases.
## Affected Systems
- **Products:** OpenSSL Cryptographic Library
- **Versions:**
- 3.6.0 prior to 3.6.2
- 3.5.0 prior to 3.5.6
- 3.4.0 prior to 3.4.5
- 3.3.0 prior to 3.3.7
- 3.0.0 prior to 3.0.20
- **Configurations:** Systems utilizing these specific branches for TLS/SSL termination, code signing, or cryptographic operations.
## Vulnerability Description
While the technical specifics are contained within the individual CVEs published on the release date, these advisories typically address memory corruption, logic errors in certificate validation, or side-channel vulnerabilities within the OpenSSL provider architecture.
## Exploitation
- **Status:** Detailed PoC availability depends on the specific CVE; generally, OpenSSL vulnerabilities are disclosed without public PoC but are rapidly analyzed by the research community.
- **Complexity:** Medium to High (Depending on the specific flaw)
- **Attack Vector:** Network (Typically via specially crafted TLS handshakes or certificates).
## Impact
- **Confidentiality:** Potential (Depending on the specific CVE)
- **Integrity:** Potential (Depending on the specific CVE)
- **Availability:** High (Common impact for OpenSSL vulnerabilities via DoS)
## Remediation
### Patches
Update to the following versions as applicable to your current branch:
- OpenSSL **3.6.2**
- OpenSSL **3.5.6**
- OpenSSL **3.4.5**
- OpenSSL **3.3.7**
- OpenSSL **3.0.20** (LTS Branch)
### Workarounds
- There are no standard workarounds for these cryptographic library flaws; upgrading the binary/shared library and restarting dependent services is required.
## Detection
- **Indicators of compromise:** Monitor system logs for unusual crashes in processes linked to `libssl` or `libcrypto`.
- **Detection methods and tools:**
- Use package managers (e.g., `rpm -q openssl` or `dpkg -l openssl`) to audit installed versions.
- Software Composition Analysis (SCA) tools to detect embedded OpenSSL libraries in compiled binaries.
## References
- OpenSSL Vulnerabilities: hxxps[://]openssl-library[.]org/news/vulnerabilities/index[.]html
- Canadian Centre for Cyber Security Advisory: hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/openssl-security-advisory-av26-329