EUVD-2026-92764
GHSA-2chf-ff75-p482
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
-
AccessGain local low-privileged shell access
-
ExploitSend crafted request to autofs responder socket
-
ImpactTrigger out-of-bounds read crashing responder (DoS)
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK
1 technique across 1 tactic: Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Requires local access to the host with a low-privileged account able to connect to the autofs responder UNIX socket (PR:L), and the SSSD autofs responder service must be enabled/configured in sssd.conf - it is not active unless autofs integration is in use. Exploitation is limited to a local attack vector (no remote exploitation), yields only a denial of service against the autofs responder process (which can be restarted), and produces no confidentiality or integrity impact; these factors keep real-world risk low even though attack complexity is low and no user interaction is needed. |
| Impact | All available signals point to a low-priority, low-impact vulnerability. The Red Hat CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L, base 3.3) requires local access by an already-authenticated low-privileged user and yields only a limited availability impact - a crash of the autofs responder process. There is no EPSS score, no CISA KEV listing, and no public proof-of-concept in the provided data, so there is no evidence of active or likely exploitation. A notable conflict exists in the metadata: the vulnerability is tagged 'Information Disclosure', but CWE-125 (out-of-bounds read) here is scored C:N by Red Hat and the description states the outcome is a process crash/DoS, not data leakage - the confidentiality-impact tag therefore contradicts the vendor's own scoring and should not be treated as confirmed info disclosure. Net: this is a genuinely low-risk, local-only DoS, not a high-severity or widely-exploitable issue, and warrants routine patching rather than emergency response. |
| Exploit ScenarioDerived | A local user who already has shell access on a RHEL host running SSSD with the autofs responder enabled connects to the autofs responder UNIX socket and sends a specially crafted request. Improper buffer offset calculation during parsing triggers an out-of-bounds read that crashes the responder, denying autofs name resolution to other users until the service restarts. No public exploit code has been identified at time of analysis. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAIv1 – Oct 05, 2026
Crashing the SSSD autofs responder process via a crafted request to its UNIX socket allows a local, low-privileged attacker to cause a denial of service on affected Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4 systems. The vulnerability stems from improper buffer offset calculation during request parsing, leading to an out-of-bounds read (CWE-125) that terminates the responder process; it carries a CVSS 3.3 (Low) score with no confidentiality or integrity impact. No public exploit code or active exploitation (CISA KEV) has been identified at time of analysis, and the autofs responder service must be enabled for the flaw to be exploitable.
RemediationAI
No vendor-released patch has been identified at the time of analysis. Until a fix is available, restrict access to the SSSD autofs responder UNIX socket to trusted local users by adjusting socket permissions; this reduces the attack surface but may not be possible in environments where multiple users require automount services. If autofs integration is not essential, disable the autofs responder by removing 'autofs' from the 'services' line in sssd.conf and restarting SSSD, though this will break automount functionality. Monitor for crashes of the autofs responder process and apply vendor updates as soon as they are released; consult the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-104029 for updated guidance.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
SSSD (System Security Services Daemon) provides access to identity and authentication services; its autofs responder handles automount map requests via a UNIX domain socket. The flaw, CWE-125 (Out-of-bounds Read), arises from improper buffer offset calculation when parsing a specially crafted request sent to that socket. This allows a local attacker to read beyond the intended buffer, causing a crash of the autofs responder process. The affected component is present in Red Hat Enterprise Linux versions 6, 7, 8, 9, and 10, as well as Red Hat OpenShift Container Platform 4, as indicated by the provided CPEs. The CVSS vector (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L) confirms that exploitation requires local access with low privileges and results only in a low availability impact.
Know when Sssd gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Local socket access by an authenticated low-privileged user (AV:L, PR:L, AC:L); impact is a single-process crash only, so A:L with C:N and I:N.
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
DescriptionCVE.org
A flaw was found in SSSD. A local attacker can exploit this vulnerability by sending a specially crafted request to the autofs responder UNIX socket. Due to improper buffer offset calculation during request parsing, the service performs an out-of-bounds memory read. This flaw can cause the autofs responder process to crash, resulting in a denial of service (DoS).
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cach
Access-control bypass in SSSD lets an already-authenticated user from a trusted identity domain reach hosts and services
The UNIX pipe which sudo uses to contact SSSD and read the available sudo rules from SSSD has too wide permissions, whic
Memory leak in the Privilege Attribute Certificate (PAC) responder plugin (sssd_pac_plugin.so) in System Security Servic
Access control bypass in SSSD when configured with non-default ordering that evaluates password-expiration warnings befo
Memory exhaustion in the SSSD (System Security Services Daemon) can be triggered by an unauthenticated local attacker wh
Denial of service in sssd passkey authentication handling allows any local user to crash the PAM responder by sending a
Local unprivileged users on hosts running the System Security Services Daemon (SSSD) can crash or destabilize the NSS re
A local denial-of-service flaw in SSSD (System Security Services Daemon) lets an attacker who can connect to the PAM res
A local denial of service in SSSD's Name Service Switch (NSS) responder lets an attacker who can reach the responder's U
Unprivileged local users can exhaust memory in the SSSD NSS responder by repeatedly requesting lookups for nonexistent e
Denial of service in SSSD's autofs responder allows a local attacker with an existing account on the host to crash the r
Exploit-DB