SEPTEMBER 15, 2026
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Case File

CVE-2026-90463

MEDIUM · CVSS 4

Source: NVD + CISA KEV + EPSS · Published 2026-09-14 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

A vulnerability exists in the sssd NSS responder that allows local attackers to exploit input validation weaknesses by sending crafted service lookup requests to the UNIX socket, potentially leading to an out-of-bounds read. This can result in a denial of service (DoS) by crashing the NSS responder process, affecting system availability. Organizations using the sssd service should prioritize patching this vulnerability to mitigate the risk of service disruption.

CVE
CVE-2026-90463
Severity
MEDIUM
CVSS
4
EPSS
N/A

Original NVD Description

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.