access.redhat.comvdb entry
https://access.redhat.com/security/cve/CVE-2026-68744 CVE-2026-68744
LOW
Sssd: sssd: nss responder uninitialized heap disclosure in initgroups reply
Record summary
CVE-2026-68744 has a selected CVSS score of 3.3 (low).
Description
A flaw was found in SSSD. The sss_nss_protocol_fill_initgr() function in the NSS responder pre-allocates reply space for all group entries but does not shrink the packet when groups are skipped, causing uninitialized heap bytes to be transmitted to the client. A local attacker can exploit this to disclose cached directory data and heap layout information from the sssd_nss process.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 4, 2026 · Source: CVE List
Affected products and versions
6| Product | Source | Version range | Status |
|---|---|---|---|
Default status: affected | CVE List | Version data not supplied | |
Default status: unaffected | CVE List | Version data not supplied | |
Default status: affected | CVE List | Version data not supplied | |
Default status: affected | CVE List | Version data not supplied | |
Default status: affected | CVE List | Version data not supplied | |
Default status: affected | CVE List | Version data not supplied | |
References
3RHBZ#2509761issue tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2509761 nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-68744