CVE catalog
CVE-2026-90463
A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cau
- Severity
- Medium · CVSS 4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.15% · Oct 25, 2026
A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service (DoS) by crashing the NSS responder process. While unprivileged local clients can typically reach the socket, there is no evidence of privilege escalation or reliable data disclosure.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | sssd | sid | 2.13.1-3 | vulnerable |
| Debian | sssd | trixie | 2.10.1-2 | vulnerable |
| Debian | sssd | bookworm | 2.8.2-4+deb12u1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | sssd | source | sid | (unfixed) | not yet assigned | Not reported | [1148452] |
| Debian | sssd | source | trixie | (unfixed) | not yet assigned | Not reported | [1148452] |
| Debian | sssd | source | bookworm | (unfixed) | not yet assigned | Not reported | [1148452] |
Notes
[trixie] sssd: Minor issue
OpenFactory catalog packages
Vulnerability data is temporarily unavailable.
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-90463]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-90463]
- [https://security-tracker.debian.org/tracker/CVE-2026-90463]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90463.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]