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.
CVE-2026-88924
“—” beside the score: it is equal to the CVSS score beside it.
Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-09-10. A secondary CVSS source baseline 7.0; sources differ by 0.0.
Also known asEUVD-2026-75537 (ENISA EUVD) · GHSA-8w8m-36rw-gg63 (GitHub Security Advisories)Source: ENISA EUVD
- CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
A fix is available — apply it.
- CVSS v3
- 7.0
- EG Score
- 7.0HIGHmedium confidence
- EG Risk
- 48EG Risk 48/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity70% × 45%Impact severity (EG Severity): CVSS 7.0 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.2%
- EPSS %ILE
- 12th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (7.0): severity, escalated by confirmed exploitation. This CVE's 7.0 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.0 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
September 10, 2026
Last Modified
October 21, 2026
Advisory Details (3)
Auto-updated Sep 10, 2026GVfs admin socket ownership race permits local root (#875) · Issues · GNOME / gvfs · GitLab
https://gitlab.gnome.org/GNOME/gvfs/-/issues/8752531456 – (CVE-2026-88924) CVE-2026-88924 gvfs: gvfs-admin socket ownership race permits local root
https://bugzilla.redhat.com/show_bug.cgi?id=2531456CVE-2026-88924 - 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-2026-88924Vendor Advisories for CVE-2026-88924(7)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:85939Red Hat Product SecurityHigh
Red Hat Security Advisory: gvfs security update
- RHSA-2026:85944Red Hat Product SecurityHigh
Red Hat Security Advisory: gvfs security update
- RHSA-2026:85941Red Hat Product SecurityHigh
Red Hat Security Advisory: gvfs security update
- RHSA-2026:85942Red Hat Product SecurityHigh
Red Hat Security Advisory: gvfs security update
- RHSA-2026:74370Red Hat Product SecurityHigh
Red Hat Security Advisory: gvfs security update
- RHSA-2026:73998Red Hat Product SecurityHigh
Red Hat Security Advisory: gvfs security update
- GHSA-8w8m-36rw-gg63GitHub Security AdvisoriesHigh
A flaw was found in the admin backend of gvfs. The privileged gvfsd-admin daemon changes the...
Patch Availability(7)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | gvfs-libs (1.28.2-1ubuntu1~16.04.3+esm1) @ xenial | 2026-10-28 | ubuntu |
| redhat | gvfs-0:1.48.1-4.el9_4.1 | 2026-10-20 | redhat |
| redhat | gvfs-0:1.54.4-2.el10_0.2 | 2026-10-20 | redhat |
| redhat | gvfs-0:1.48.1-4.el9_2.1 | 2026-10-20 | redhat |
| redhat | gvfs-0:1.48.1-6.el9_6.1 | 2026-10-20 | redhat |
| redhat | gvfs-0:1.48.1-8.el9_8.1 | 2026-10-01 | redhat |
| redhat | gvfs-0:1.54.4-4.el10_2.1 | 2026-09-30 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(3 across 3 ecosystems)
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gvfs | 1.50.3-1 ... 1.62.0-3 (42 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gvfs | 1.57.2-2 ... 1.62.0-3 (14 versions) |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gvfs | 1.57.2-2 ... 1.60.0-2 (10 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(1)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 10× in last 7d / 115× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 100 of 227 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 127 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-28 04:45 UTCEG score recompute
- 2026-10-28 04:45 UTCVendor advisory
- 2026-10-28 04:45 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-25 13:53 UTCEG score recompute
- 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-10-21 00:27 UTCEG score recompute
- 2026-10-21 00:27 UTCVendor advisory
- 2026-10-21 00:27 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-20 23:23 UTCEG score recompute
- 2026-10-20 23:23 UTCVendor advisory
- 2026-10-20 23:22 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-20 15:26 UTCEG score recompute
- 2026-10-20 15:26 UTCVendor advisory
- 2026-10-20 15:26 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
Show 75 moreShow fewer
- 2026-10-20 14:59 UTCEG score recompute
- 2026-10-20 14:59 UTCVendor advisory
- 2026-10-20 14:59 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-20 14:28 UTCEG score recompute
- 2026-10-20 14:28 UTCVendor advisory
- 2026-10-20 14:28 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-20 13:29 UTCEG score recompute
- 2026-10-20 13:29 UTCVendor advisory
- 2026-10-20 13:28 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-19 12:58 UTCVendor advisory
- 2026-10-19 12:58 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-19 10:49 UTCEG score recompute
- 2026-10-19 10:49 UTCVendor advisory
- 2026-10-19 10:49 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-18 03:03 UTCEG score recompute
- 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-15 07:00 UTCEG score recompute
- 2026-10-15 07:00 UTCVendor advisory
- 2026-10-15 06:59 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-14 11:27 UTCEG score recompute
- 2026-10-14 11:27 UTCVendor advisory
- 2026-10-14 11:27 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-14 10:41 UTCEG score recompute
- 2026-10-14 10:41 UTCVendor advisory
- 2026-10-14 10:40 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-13 05:00 UTCEG score recompute
- 2026-10-13 05:00 UTCVendor advisory
- 2026-10-13 04:59 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-12 14:49 UTCEG score recompute
- 2026-10-11 21:51 UTCVendor advisory
- 2026-10-11 21:51 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-11 19:15 UTCEG score recompute
- 2026-10-11 16:32 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-11 13:48 UTCEG score recompute
- 2026-10-11 07:10 UTCEG score recompute
- 2026-10-11 07:10 UTCVendor advisory
- 2026-10-11 07:09 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-10 19:40 UTCEG score recompute
- 2026-10-10 19:40 UTCVendor advisory
- 2026-10-10 19:40 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-10 08:11 UTCEG score recompute
- 2026-10-10 08:11 UTCVendor advisory
- 2026-10-10 08:11 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-09 19:53 UTCVendor advisory
- 2026-10-09 19:52 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-08 23:48 UTCEG score recompute
- 2026-10-08 23:48 UTCVendor advisory
- 2026-10-08 23:47 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-08 08:25 UTCEG score recompute
- 2026-10-08 08:25 UTCVendor advisory
- 2026-10-08 08:25 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-07 21:10 UTCVendor advisory
- 2026-10-07 21:10 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-07 09:55 UTCVendor advisory
- 2026-10-07 09:55 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-06 22:40 UTCEG score recompute
- 2026-10-06 22:40 UTCVendor advisory
- 2026-10-06 22:40 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-10-06 11:25 UTCVendor advisory
- 2026-10-06 11:25 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-10-06 00:10 UTCEG score recompute
- 2026-10-06 00:10 UTCVendor advisory
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:12:gvfs
Frequently asked(5)
What is CVE-2026-88924?
When was CVE-2026-88924 made public?
Is CVE-2026-88924 actively exploited?
What is the CVSS score of CVE-2026-88924?
How do I remediate CVE-2026-88924?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-88924
Is Your Infrastructure Affected by CVE-2026-88924?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.