A flaw was found in SSSD. An unprivileged local user can repeatedly request lookups for nonexistent entries through the Name Service Switch (NSS) responder. Because the negative cache does not limit the total number of stored entries and only removes expired records when an existing key is rechecked, the cache can grow without bound. This behavior can lead to memory exhaustion, resulting in a Denial of Service (DoS) as the responder becomes unresponsive or terminates.
CVE-2026-104041
MEDIUMPre-NVD 5.55.5—Trending — 4 sources updated this weekElevated
EchelonGraph scoreHIGH confidence
Score 5.5 from GitHub Security Advisory published 2026-10-06. A secondary CVSS source baseline 5.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: <0.1%CVSS: 5.5Exploit: Elevated riskExposed services: Not assessed
No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.
- CVSS v3
- 5.5
- EG Score
- 5.5MEDIUMhigh confidence
- EG Risk
- 41EG Risk 41/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity55% × 45%Exploitation40% × 40%Automatability0% × 15%CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix. - EPSS PROB
- <0.1%
- EPSS %ILE
- below the 1st
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).
No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
October 6, 2026
Last Modified
October 6, 2026
Advisory Details (2)
Auto-updated Oct 6, 2026No fix on record yet. Sources: redhat.
redhat
2478864 – (CVE-2026-104041) CVE-2026-104041 sssd: sssd: Denial of Service via unbounded negative cache growth
https://bugzilla.redhat.com/show_bug.cgi?id=2478864redhatMentions a patch (unverified)
CVE-2026-104041 - Red Hat Customer Portal
Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a
https://access.redhat.com/security/cve/CVE-2026-104041Vendor Advisories for CVE-2026-104041(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 11× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-07 14:18 UTCGHSA enrichment
- 2026-10-06 15:30 UTCEG score recompute
- 2026-10-06 15:29 UTCGHSA enrichment
- 2026-10-06 15:17 UTCEPSS rescore
- 2026-10-06 14:31 UTCEG score recompute
- 2026-10-06 14:31 UTCGHSA enrichment
- 2026-10-06 13:30 UTCEG score recompute
- 2026-10-06 13:30 UTCGHSA enrichment
- 2026-10-06 02:26 UTCEG score recompute
- 2026-10-06 01:23 UTCEG score recompute
- 2026-10-06 01:19 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)· as of October 6, 2026
Frequently asked(5)
What is CVE-2026-104041?
CVE-2026-104041 is a medium vulnerability published on October 6, 2026. A flaw was found in SSSD. An unprivileged local user can repeatedly request lookups for nonexistent entries through the Name Service Switch (NSS) responder. Because the negative cache does not limit the total number of stored entries and only removes expired records when an existing key is…
When was CVE-2026-104041 disclosed?
CVE-2026-104041 was first published on October 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-104041 actively exploited?
CVE-2026-104041 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a <0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-104041?
CVE-2026-104041 has a CVSS base score of 5.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-104041?
No fix for CVE-2026-104041 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-104041 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-104041
Is Your Infrastructure Affected by CVE-2026-104041?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.