EUVD-2026-75899
GHSA-693g-ppp7-3j2h
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Network-reachable certificate parsing, no auth required for TLS handshake exposure, availability-only impact via memory exhaustion; A:L reflects gradual DoS rather than immediate crash.
Primary rating from Vendor (vendor:ubuntu).
CVSS VectorVendor: vendor:ubuntu
Lifecycle Timeline
4DescriptionCVE.org
Memory Leak When Processing Certificates in PKCS#7 Containers
AnalysisAI
Memory exhaustion via PKCS#7 certificate processing affects an Ubuntu-packaged cryptographic component, allowing crafted certificate containers to gradually leak heap memory. The vulnerable component is reported by Ubuntu but the specific library (e.g., OpenSSL, GnuTLS, or another ASN.1/PKCS#7 parser) is not identified in available data. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The vulnerable service must accept externally-supplied PKCS#7 certificate data - for example, a TLS server configured with client certificate authentication (mTLS), an S/MIME mail gateway, or a code-signing or package verification daemon. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Available signals for this CVE are sparse: no CVSS vector, no EPSS score, no KEV listing, no CPE, and no POC reference have been provided. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No patch version or vendor advisory URL is provided in the available data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
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Same weakness CWE-401 – Memory Leak
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External POC / Exploit Code
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