CVE-2025-54770

MEDIUMPre-NVD 4.94.9—
EchelonGraph scoreMEDIUM confidence

Score 4.9 from GitHub Security Advisory published 2025-11-18. a secondary CVSS source baseline 4.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 4.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A vulnerability has been identified in the GRUB2 bootloader's network module that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the net_set_vlan command is not properly unregistered when the network module is unloaded from memory. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability

CVSS v3
4.9
EG Score
4.9MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity49% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.1%
EPSS %ILE
3rd
KEV
Not listed

Published

November 18, 2025

Last Modified

September 1, 2026

Advisory Details (4)

Auto-updated Jun 25, 2026
Patch available. Sources: redhat.
generic

oss-security - [SECURITY PATCH 3/8] net/net: Unregister net_set_vlan command on unload

http://www.openwall.com/lists/oss-security/2025/11/18/4
generic

[SECURITY PATCH 0/8] GRUB2 vulnerabilities - 2025/11/18

https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html
redhat

2413813 – (CVE-2025-54770) CVE-2025-54770 grub2: Use-after-free in net_set_vlan

https://bugzilla.redhat.com/show_bug.cgi?id=2413813
redhatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2025-54770

Vendor Advisories for CVE-2025-54770(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
grub22.04-20 ... 2.14~git20250718.0e36779-2 (68 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
grub22.06-13 ... 2.14~git20250718.0e36779-2 (36 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
grub22.12-9 ... 2.14~git20250718.0e36779-2 (9 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
grub22.12-9, 2.12-9+hurd.1, 2.14~git20250718.0e36779-1, 2.14~git20250718.0e36779-2
  • every version up to 2.14-1: fixed in 2.14-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 204 total refreshes for this CVE.

  1. 2026-10-10 01:03 UTCOSV refresh
  2. 2026-10-09 20:06 UTCEPSS rescore
  3. 2026-10-08 17:10 UTCEPSS rescore
  4. 2026-10-07 23:47 UTCEPSS rescore
  5. 2026-10-06 15:17 UTCEPSS rescore
  6. 2026-10-05 17:42 UTCEPSS rescore
  7. 2026-10-04 23:21 UTCEPSS rescore
  8. 2026-10-03 14:24 UTCEPSS rescore
  9. 2026-10-01 19:49 UTCEPSS rescore
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-09-30 15:02 UTCEPSS rescore
  12. 2026-09-28 13:50 UTCEPSS rescore
  13. 2026-09-26 15:58 UTCEPSS rescore
  14. 2026-09-26 15:58 UTCEPSS rescore
  15. 2026-09-26 00:25 UTCEPSS rescore
  16. 2026-09-24 14:02 UTCEPSS rescore
  17. 2026-09-23 13:47 UTCEPSS rescore
  18. 2026-09-21 21:06 UTCEPSS rescore
  19. 2026-09-20 20:15 UTCEPSS rescore
  20. 2026-09-20 20:15 UTCEPSS rescore
  21. 2026-09-20 09:03 UTCOSV refresh
  22. 2026-09-19 15:42 UTCEPSS rescore
  23. 2026-09-18 19:27 UTCEPSS rescore
  24. 2026-09-18 19:27 UTCEPSS rescore
  25. 2026-09-17 19:29 UTCEPSS rescore
Show 75 more
  1. 2026-09-16 14:07 UTCEPSS rescore
  2. 2026-09-16 05:14 UTCEPSS rescore
  3. 2026-09-13 16:46 UTCEPSS rescore
  4. 2026-09-11 14:52 UTCEPSS rescore
  5. 2026-09-11 09:36 UTCEPSS rescore
  6. 2026-09-10 09:34 UTCEPSS rescore
  7. 2026-09-08 21:59 UTCEPSS rescore
  8. 2026-09-07 16:00 UTCEPSS rescore
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-05 15:28 UTCEPSS rescore
  11. 2026-09-04 05:06 UTCEPSS rescore
  12. 2026-09-02 14:11 UTCEPSS rescore
  13. 2026-09-01 13:53 UTCEPSS rescore
  14. 2026-09-01 12:30 UTCEG score recompute
  15. 2026-09-01 12:30 UTCGHSA enrichment
  16. 2026-09-01 12:02 UTCEG score recompute
  17. 2026-09-01 12:02 UTCGHSA enrichment
  18. 2026-09-01 04:38 UTCEPSS rescore
  19. 2026-08-31 16:43 UTCEG score recompute
  20. 2026-08-31 16:43 UTCGHSA enrichment
  21. 2026-08-31 15:09 UTCEG score recompute
  22. 2026-08-31 15:09 UTCGHSA enrichment
  23. 2026-08-30 19:16 UTCEPSS rescore
  24. 2026-08-30 01:21 UTCEPSS rescore
  25. 2026-08-28 21:40 UTCEPSS rescore
  26. 2026-08-27 14:24 UTCEPSS rescore
  27. 2026-08-26 14:45 UTCEPSS rescore
  28. 2026-08-25 13:48 UTCEPSS rescore
  29. 2026-08-24 14:16 UTCEPSS rescore
  30. 2026-08-24 09:22 UTCEPSS rescore
  31. 2026-08-23 00:18 UTCEPSS rescore
  32. 2026-08-21 23:48 UTCEPSS rescore
  33. 2026-08-21 13:23 UTCEG score recompute
  34. 2026-08-21 13:23 UTCGHSA enrichment
  35. 2026-08-21 12:50 UTCEG score recompute
  36. 2026-08-21 12:50 UTCGHSA enrichment
  37. 2026-08-20 22:54 UTCEPSS rescore
  38. 2026-08-19 17:03 UTCEPSS rescore
  39. 2026-08-18 13:47 UTCEPSS rescore
  40. 2026-08-17 13:46 UTCEPSS rescore
  41. 2026-08-16 14:55 UTCEPSS rescore
  42. 2026-08-16 02:13 UTCEPSS rescore
  43. 2026-08-15 01:29 UTCEPSS rescore
  44. 2026-08-13 21:59 UTCEPSS rescore
  45. 2026-08-12 13:50 UTCEPSS rescore
  46. 2026-08-12 13:50 UTCEPSS rescore
  47. 2026-08-11 13:42 UTCEPSS rescore
  48. 2026-08-10 23:59 UTCEPSS rescore
  49. 2026-08-09 13:46 UTCEPSS rescore
  50. 2026-08-08 16:36 UTCEPSS rescore
  51. 2026-08-08 10:13 UTCEG score recompute
  52. 2026-08-08 10:13 UTCGHSA enrichment
  53. 2026-08-07 16:26 UTCEPSS rescore
  54. 2026-08-06 13:46 UTCEPSS rescore
  55. 2026-08-05 19:16 UTCEPSS rescore
  56. 2026-08-04 15:09 UTCEPSS rescore
  57. 2026-08-04 15:09 UTCEPSS rescore
  58. 2026-08-03 10:35 UTCEPSS rescore
  59. 2026-08-02 02:26 UTCEPSS rescore
  60. 2026-08-01 04:15 UTCEPSS rescore
  61. 2026-07-30 16:27 UTCEPSS rescore
  62. 2026-07-30 01:30 UTCEPSS rescore
  63. 2026-07-28 15:35 UTCEPSS rescore
  64. 2026-07-27 07:09 UTCOSV refresh
  65. 2026-07-26 14:54 UTCEPSS rescore
  66. 2026-07-24 14:17 UTCEPSS rescore
  67. 2026-07-23 14:18 UTCEPSS rescore
  68. 2026-07-23 02:58 UTCEG score recompute
  69. 2026-07-22 14:08 UTCEPSS rescore
  70. 2026-07-22 14:07 UTCEPSS rescore
  71. 2026-07-21 15:24 UTCEPSS rescore
  72. 2026-07-20 17:08 UTCEPSS rescore
  73. 2026-07-19 14:30 UTCEPSS rescore
  74. 2026-07-19 14:30 UTCEPSS rescore
  75. 2026-07-18 10:04 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2025-54770?
CVE-2025-54770 is a medium vulnerability published on November 18, 2025. A vulnerability has been identified in the GRUB2 bootloader's network module that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the netsetvlan command is not properly unregistered when the network module is unloaded from memory. An attacker who…
When was CVE-2025-54770 disclosed?
CVE-2025-54770 was first published on November 18, 2025, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-54770 actively exploited?
CVE-2025-54770 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-54770?
CVE-2025-54770 has a CVSS base score of 4.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2025-54770?
A fix for CVE-2025-54770 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-54770 are linked in the Vendor Advisories panel on this page.

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