MEDIUMCVSS v3.1 5.9Vulnerability
CVE-2026-127099
A flaw was found in SSSD's conversion of X.509 certificate RSA public keys to SSH keys. Missing size checks before copying RSA components into fixed-size stack buffers can cause a stack buffer overflow. An attacker able to supply a certificate with oversized RSA components that passes the configured certificate checks can cause denial of service and corrupt SSH responder memory.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00169
- Cvss severity
- MEDIUM
- Cvss score
- 5.9
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Last source
- FIRST EPSS
- Score
- 5.9
- Cvss version
- 3.1
- Cve id
- CVE-2026-127099
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
- First seen by Signal
- 2026-11-12T19:59:23+00:00
- Name
- CVE-2026-127099
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
- Published at
- 2026-11-12T18:17:40.227
- Last modified
- 2026-11-12T20:18:34.627
- Epss percentile
- 0.06369
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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