VulnerabilityPublished 22 Sep 2026Updated 6 Nov 2026

CVE-2026-90462: Red Hat Enterprise Linux 10 · Improper Handling of Insufficient Permissions or Privileges

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 5.4 Medium.

Data as of 6 Nov 2026, 11:57 UTC

CVSS 3.1 base score

5.4Medium

How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none

CVSS scores by source
CNA (redhat)	CVSS 3.1	5.4

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 22 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Red Hat Enterprise Linux 10sssd	Affected–	Fixed in–
Red Hat Enterprise Linux 6sssd	Affected–	Fixed in–
Red Hat Enterprise Linux 7sssd	Affected–	Fixed in–
Red Hat Enterprise Linux 8sssd	Affected–	Fixed in–
Red Hat Enterprise Linux 9sssd	Affected–	Fixed in–
Red Hat OpenShift Container Platform 4openshift/ose-rhel-coreos-8	Affected–	Fixed in–

AI-suggested

Red Hat states that there is no available mitigation for this issue at this time. Users should review their SSSD LDAP access configurations and consider the risk of using ldap_access_order with ppolicy or lockout. Monitoring Red Hat advisories for future patches or updates is recommended.

Description

CVE-2026-90462 is a medium severity vulnerability in SSSD on Red Hat Enterprise Linux 10. It occurs when SSSD is configured with the LDAP access provider and ldap_access_order includes ppolicy or lockout. A fail-open condition in the LDAP ppolicy access check can cause authorization to be incorrectly granted and cached for deleted or deprovisioned users. Exploitation requires prior valid account context and specific non-default configurations. No mitigation or patch is currently available.

Impact

The flaw allows a deleted or deprovisioned user to retain authorization under specific LDAP access control configurations in SSSD. This can lead to unauthorized continued access to information and limited modification capabilities on resources that should be inaccessible. The impact is limited to environments using non-default SSSD configurations with ldap_access_order including ppolicy or lockout and requires the attacker to have prior valid account context. There is no indication of availability impact.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 6 Nov 2026, 11:57 UTC

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