What is CVE-2026-88924?

CVE-2026-88924 is Gvfs: gvfs-admin socket ownership race permits local root. The supplied enrichment data classifies it as Race Condition mapped to CWE-367 CWE-367.

Which versions are affected?

Affected product and version evidence is listed in the product table above. Current public advisories should be checked for exact version scope before patch targeting is finalized.

Is there active exploitation?

Active exploitation is not confirmed from current sources for CVE-2026-88924. If exploitation is not confirmed from current sources, teams should document that status and continue monitoring KEV, vendor, and telemetry updates.

No. CVE-2026-88924 is not listed in CISA KEV in the supplied enrichment data. KEV status should be monitored because it can change after initial disclosure or after exploitation becomes publicly confirmed.

Is there a public exploit?

A public PoC is not confirmed from current sources for CVE-2026-88924. Public exploit or PoC availability should raise triage priority, especially for exposed or business-critical systems.

How can defenders detect it?

Start with Not reported where available. Look for vulnerability-class behavior, product errors, suspicious authentication events, exploit probes, and abnormal process activity based only on evidence that applies to the affected product.

How should teams prioritize it?

Prioritize CVE-2026-88924 using CVSS 7, EPSS 0%, KEV status, public PoC status, and asset exposure. Internet-facing, privileged, or business-critical deployments should be handled first.

Are workarounds available?

The supplied mitigation guidance says to apply vendor patches and restrict external exposure until fixed. Fixed-version evidence is listed in the mitigation section above.

Which threat actors are linked publicly?

No public threat actor linkage is confirmed from current sources. Do not attribute exploitation to a threat actor unless the source evidence explicitly supports that linkage.

What should be done in the next 24 hours?

Identify exposed assets running affected vendor/product/version combinations. Prioritize based on EPSS, PoC availability, and external exposure. Search available logs for exploit probes, errors, authentication anomalies, or suspicious child processes matching the vulnerability class. Open remediation tickets with affected assets, owners, evidence status, and detection coverage so decisions are traceable.

highRace Condition

CVE-2026-88924

CVE-2026-88924 — Gvfs: gvfs-admin socket ownership race permits local root

A flaw was found in the admin backend of gvfs. The privileged gvfsd-admin daemon changes the ownership of newly created private D-Bus sockets by calling the link-following chown() function on a pathname inside a user-controlled directory. A local attacker can exploit this via a Time-of-Check Time-of-Use (TOCTOU) race condition and exchange the socket pathname with a symbolic link pointing to an arbitrary root-owned file (such as /etc/pam.d/su). The daemon subsequently follows the symlink and changes the ownership of the targeted root-owned file to the attacker's user ID. This allows an authenticated local attacker to modify critical system files, leading to a full local privilege escalation to root.

Published Sep 10, 2026Updated Sep 10, 2026Sources: NVD, Red Hat (CNA), GitHub, GitHub Security Advisory, Red Hat (VEX), SOCRadar CTI

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.

Exploitation

Unreported

no source claims exploitation

EPSS

ahead of 0% of scored CVEs

Affects

Red Hat

5 products listed

CVSS base

high

Remediation

The vendor's own words where we have them.

Upgrade Red Hat Enterprise Linux 10 to a fixed release. Apply vendor patches per advisory and restrict external exposure of the affected component until patched.

Red Hat VEX · CVE-2026-88924

fixed0affected48not affected0

workaround: To mitigate this issue, adjust Polkit rules to require password authentication to start gvfsd-admin or remove execute permissions of the gvfsd-admin binary to prevent execution.

none_available: Affected

First 24 hours

Ordered from the record's own fields — exposure first, because you cannot patch what you have not found.

Identify exposed assets running affected vendor/product/version combinations.
Prioritize based on EPSS, PoC availability, and external exposure.
Search available logs for exploit probes, errors, authentication anomalies, or suspicious child processes matching the vulnerability class.

Affected scope

Vendor, product and version as the advisories word them.

Vendor	Product	Versions	Status
Red Hat	Red Hat Enterprise Linux 10	—	Vulnerable
Red Hat	Red Hat Enterprise Linux 6	—	Vulnerable
Red Hat	Red Hat Enterprise Linux 7	—	Vulnerable
Red Hat	Red Hat Enterprise Linux 8	—	Vulnerable
Red Hat	Red Hat Enterprise Linux 9	—	Vulnerable

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Availability

High

Confidentiality

High

Integrity

High

Scope

Unchanged

Attack Complexity

High

Attack Vector

Local

Privileges Req

Low

User Interaction

None

Every base score collected

Sources score independently and disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Source
7	CVSS 3.1	high	1	5.9	NVD, Red Hat (CNA), GHSA, Red Hat (VEX)

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

What this weakness leads to

MITRE's own consequences and mitigations for the weakness class — the authority's wording, not guidance derived from the CVSS vector.

MITRE

CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition

Alter Execution Logic
Unexpected State
Modify Application Data
Modify Files or Directories

Mitigation: The most basic advice for TOCTOU vulnerabilities is to not perform a check before the use. This does not resolve the underlying issue of the execution of a function on a resource whose state and identity cannot be assured, but it does help to limit the false sense of security given by the check.

Weakness & attack patterns

CWE-367

Attack patterns reported against this CVE. The ATT&CK techniques below are inferred from its weakness class.

CAPEC-29 · Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race ConditionsCAPEC-27 · Leveraging Race Conditions via Symbolic Links

Detection

Read off the CVSS vector and the weakness class. Starting points, not rules we have tested.

Search application, proxy, and WAF logs for requests touching /etc/pam.d/su).

Timeline

What happened to this CVE, newest first — with the readings a source repeats on a schedule counted underneath rather than listed.

2026
Added · CVSS 3.1 7.0 (AV:L)
Sep 10, 2026 · NVD
Initial · CVE published
Sep 10, 2026 · NVD
Reported to Red Hat.
Sep 10, 2026 · Red Hat
Added · GHSA-8w8m-36rw-gg63 published (high)
Sep 10, 2026 · GitHub Security Advisory
CVE published by MITRE.
Sep 10, 2026 · SOCRadar CTI
Reported · Made public.
Sep 9, 2026 · Red Hat

References

6 on the record

access.redhat.com/security/cve/CVE-2026-88924
Vendor Advisory
bugzilla.redhat.com/show_bug.cgi?id=2531456
Vendor Advisory, Mitre
gitlab.gnome.org/GNOME/gvfs/-/issues/875
Vendor Advisory
nvd.nist.gov/vuln/detail/CVE-2026-88924
NVD
github.com/advisories/GHSA-8w8m-36rw-gg63
Exploit, Third Party Advisory
www.cve.org/CVERecord?id=CVE-2026-88924
Vendor Advisory

Elsewhere on this site

Red Hatevery CVE for this vendor
Race Conditionsame class
CWE-367other pages naming this weakness

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record1

What should defenders know first?

CVE-2026-88924 is Gvfs: gvfs-admin socket ownership race permits local root, a high vulnerability affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 from Red Hat. The current evidence does not list it in CISA KEV, and the exploit status is: Active exploitation is not confirmed from current sources for CVE-2026-88924. Public exploit evidence is: A public PoC is not confirmed from current sources for CVE-2026-88924. The affected-version evidence is listed in the key facts and affected products tables. Defenders should first verify whether exposed or business-critical assets run those versions, then apply vendor patches or mitigations, restrict reachable attack surface, and preserve logs for detection review. CVSS 7 describes technical severity, while EPSS 0% helps estimate near-term exploit likelihood; neither replaces asset context. Unknown fields should remain explicit in tickets, and threat actor, IOC, victimology, or payload claims should not be added unless a cited source supports them. Monitor CISA KEV, vendor advisories, NVD changes, public PoC repositories, and internal telemetry for update triggers.