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Vulnerability record · CVE-2026-68742 · published 3 August 2026

CVE-2026-68742: Fedoraproject sssd out-of-bounds read vulnerability

Fedoraproject · Sssd

A flaw was found in SSSD. The sss_nss_protocol_parse_addr() function in the NSS responder does not validate the addrlen field against the remaining packet body size. A local attacker can exploit this via a crafted GETHOSTBYADDR request to the NSS responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.

5.5 CVSS 3.1 Medium EPSS 0.13% · top 97.8% CWE-125 · Out-of-bounds read
5.5CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
2References
31 Aug 2026Last modified by NVD

Description

A flaw was found in SSSD. The sss_nss_protocol_parse_addr() function in the NSS responder does not validate the addrlen field against the remaining packet body size. A local attacker can exploit this via a crafted GETHOSTBYADDR request to the NSS responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2026-68742 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2509762 Issue TrackingVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-68742), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.