CVE-2026-88924

HIGHPre-NVD 7.07.0
EchelonGraph scoreMEDIUM confidence

“—” 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.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this weekElevated

Also known asEUVD-2026-75537 (ENISA EUVD) · GHSA-8w8m-36rw-gg63 (GitHub Security Advisories)Source: ENISA EUVD

7.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.0Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.0
EG Score
7.0HIGHmedium confidence
EG Risk
48
EG 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, 2026
Patch available. Sources: redhat.
Web page

GVfs admin socket ownership race permits local root (#875) · Issues · GNOME / gvfs · GitLab

https://gitlab.gnome.org/GNOME/gvfs/-/issues/875
Red Hat

2531456 – (CVE-2026-88924) CVE-2026-88924 gvfs: gvfs-admin socket ownership race permits local root

https://bugzilla.redhat.com/show_bug.cgi?id=2531456
Red HatMentions a patch (unverified)

CVE-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-2026-88924

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntugvfs-libs (1.28.2-1ubuntu1~16.04.3+esm1) @ xenial2026-10-28ubuntu
redhatgvfs-0:1.48.1-4.el9_4.12026-10-20redhat
redhatgvfs-0:1.54.4-2.el10_0.22026-10-20redhat
redhatgvfs-0:1.48.1-4.el9_2.12026-10-20redhat
redhatgvfs-0:1.48.1-6.el9_6.12026-10-20redhat
redhatgvfs-0:1.48.1-8.el9_8.12026-10-01redhat
redhatgvfs-0:1.54.4-4.el10_2.12026-09-30redhat

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)
PackageVulnerable rangeFix by version rangeDependents
gvfs1.50.3-1 ... 1.62.0-3 (42 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gvfs1.57.2-2 ... 1.62.0-3 (14 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
gvfs1.57.2-2 ... 1.60.0-2 (10 versions)
  • every version up to 1.62.0-1: fixed in 1.62.0-1
—

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.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  4. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  6. 2026-10-28 04:45 UTCEG score recompute
  7. 2026-10-28 04:45 UTCVendor advisory
  8. 2026-10-28 04:45 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  9. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  10. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-10-25 13:53 UTCEG score recompute
  13. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  14. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  16. 2026-10-21 00:27 UTCEG score recompute
  17. 2026-10-21 00:27 UTCVendor advisory
  18. 2026-10-21 00:27 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  19. 2026-10-20 23:23 UTCEG score recompute
  20. 2026-10-20 23:23 UTCVendor advisory
  21. 2026-10-20 23:22 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  22. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  23. 2026-10-20 15:26 UTCEG score recompute
  24. 2026-10-20 15:26 UTCVendor advisory
  25. 2026-10-20 15:26 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
Show 75 more
  1. 2026-10-20 14:59 UTCEG score recompute
  2. 2026-10-20 14:59 UTCVendor advisory
  3. 2026-10-20 14:59 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  4. 2026-10-20 14:28 UTCEG score recompute
  5. 2026-10-20 14:28 UTCVendor advisory
  6. 2026-10-20 14:28 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  7. 2026-10-20 13:29 UTCEG score recompute
  8. 2026-10-20 13:29 UTCVendor advisory
  9. 2026-10-20 13:28 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  10. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  11. 2026-10-19 12:58 UTCVendor advisory
  12. 2026-10-19 12:58 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  13. 2026-10-19 10:49 UTCEG score recompute
  14. 2026-10-19 10:49 UTCVendor advisory
  15. 2026-10-19 10:49 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  16. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  17. 2026-10-18 03:03 UTCEG score recompute
  18. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  19. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  20. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  21. 2026-10-15 07:00 UTCEG score recompute
  22. 2026-10-15 07:00 UTCVendor advisory
  23. 2026-10-15 06:59 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  24. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-10-14 11:27 UTCEG score recompute
  26. 2026-10-14 11:27 UTCVendor advisory
  27. 2026-10-14 11:27 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  28. 2026-10-14 10:41 UTCEG score recompute
  29. 2026-10-14 10:41 UTCVendor advisory
  30. 2026-10-14 10:40 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  31. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  32. 2026-10-13 05:00 UTCEG score recompute
  33. 2026-10-13 05:00 UTCVendor advisory
  34. 2026-10-13 04:59 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  35. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  36. 2026-10-12 14:49 UTCEG score recompute
  37. 2026-10-11 21:51 UTCVendor advisory
  38. 2026-10-11 21:51 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  39. 2026-10-11 19:15 UTCEG score recompute
  40. 2026-10-11 16:32 UTCEG score recompute
  41. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  42. 2026-10-11 13:48 UTCEG score recompute
  43. 2026-10-11 07:10 UTCEG score recompute
  44. 2026-10-11 07:10 UTCVendor advisory
  45. 2026-10-11 07:09 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  46. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  47. 2026-10-10 19:40 UTCEG score recompute
  48. 2026-10-10 19:40 UTCVendor advisory
  49. 2026-10-10 19:40 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  50. 2026-10-10 08:11 UTCEG score recompute
  51. 2026-10-10 08:11 UTCVendor advisory
  52. 2026-10-10 08:11 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  53. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  54. 2026-10-09 19:53 UTCVendor advisory
  55. 2026-10-09 19:52 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  56. 2026-10-08 23:48 UTCEG score recompute
  57. 2026-10-08 23:48 UTCVendor advisory
  58. 2026-10-08 23:47 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  59. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  60. 2026-10-08 08:25 UTCEG score recompute
  61. 2026-10-08 08:25 UTCVendor advisory
  62. 2026-10-08 08:25 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  63. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  64. 2026-10-07 21:10 UTCVendor advisory
  65. 2026-10-07 21:10 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  66. 2026-10-07 09:55 UTCVendor advisory
  67. 2026-10-07 09:55 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  68. 2026-10-06 22:40 UTCEG score recompute
  69. 2026-10-06 22:40 UTCVendor advisory
  70. 2026-10-06 22:40 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  71. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  72. 2026-10-06 11:25 UTCVendor advisory
  73. 2026-10-06 11:25 UTCGHSA enrichmentGHSA-8w8m-36rw-gg63 · GitHub severity HIGH · GitHub CVSS 7.0
  74. 2026-10-06 00:10 UTCEG score recompute
  75. 2026-10-06 00:10 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-88924?
CVE-2026-88924 is a high-severity vulnerability; its CVE record was published on September 10, 2026. 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…
When was CVE-2026-88924 made public?
CVE-2026-88924 was made public on September 9, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on September 10, 2026. EchelonGraph's copy of the record carries a last-modified date of October 21, 2026; the record at its source may have been updated since.
Is CVE-2026-88924 actively exploited?
CVE-2026-88924 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-88924?
CVE-2026-88924 has a CVSS base score of 7.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-88924?
A fix for CVE-2026-88924 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-88924 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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