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Back to active CVEs
Low · CVSS 3.3CVE-2026-68744

Sssd: sssd: nss responder uninitialized heap disclosure in initgroups replyCVE-2026-68744

Answer in brief

CVE-2026-68744 records a Low severity (CVSS 3.3) vulnerability in Sssd: sssd: nss responder uninitialized heap disclosure in initgroups reply. The current sources do not mark it as known exploited. The current feed maps Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic), Red Hat/sssd (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 4, 2026Updated Aug 31, 2026Source checked Oct 16, 2026First seen by HOL Aug 4, 2026Material review Aug 31, 2026
Upstream Advisory

Key facts

Risk
Low · CVSS 3.3
Exploitation
Not marked as known exploited
Affected software
9 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 3.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic), Red Hat/sssd (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:fedoraproject:sssd:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/openshift/ose-rhel-coreos-8generic*Not reported
Red Hat/openshift/ose-rhel-coreos-9generic*Not reported
Red Hat/sssdgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/openshift/ose-rhel-coreos-8, Red Hat/openshift/ose-rhel-coreos-9, Red Hat/sssd.
  2. 2Review the reported fix. Source-reported workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Evidence timeline and material changes

  1. Published upstream

    Aug 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 4, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Nfs-utils: nfs-utils: denial of service via assertion failure in fsiddSame red hat/openshift/ose-rhel-coreos-8 package
  • Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handlingSame generic ecosystem
  • Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolverSame generic ecosystem
  • RIOT: Potential integer overflow in nanocoap Block2 handling leading to out-of-bounds memory accessSame generic ecosystem
  • RIOT: Remote Stack Buffer Overflow in ATWINC15x0 driver via unsanitized SSIDSame generic ecosystem
  • SparkyFitness: SSRF via unvalidated custom_url in AI service settingsSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-908
Source
CVE List V5
Source checked
Oct 16, 2026
References
2 linked sources
Open source record