CVE-2025-55338

MEDIUMNVD 6.16.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 6.1 from GitHub Security Advisory published 2025-10-14. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
6.1EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 3.1%CVSS: 6.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Missing Ability to Patch ROM Code in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.

CVSS v3
6.1
EG Score
6.1MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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 (value × EchelonGraph’s weight)
Severity61% × 45%
The EG Score, 6.1 of 10.
Exploitation3.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (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.
EPSS PROB
3.1%
EPSS %ILE
87th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (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.

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

October 14, 2025

Last Modified

February 22, 2026

References (1)

Vendor Advisories for CVE-2025-55338(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 27× 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 89 of 154 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. 11 repeat rows among the latest 100 are merged into the row they repeat. The 65 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 20:30 UTCEG score recompute
  2. 2026-10-11 18:41 UTCEG score recompute
  3. 2026-10-11 15:17 UTCEG score recompute
  4. 2026-10-11 13:47 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  5. 2026-10-10 19:59 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  6. 2026-10-09 20:06 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  7. 2026-10-08 17:10 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  8. 2026-10-07 23:47 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  9. 2026-10-06 15:17 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  10. 2026-10-05 17:42 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  11. 2026-10-03 14:24 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  12. 2026-10-01 19:49 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  13. 2026-09-30 15:02 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  14. 2026-09-28 13:50 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  15. 2026-09-26 15:58 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  16. 2026-09-26 00:25 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  17. 2026-09-24 14:02 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  18. 2026-09-23 13:47 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  19. 2026-09-21 21:06 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  20. 2026-09-20 20:15 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  21. 2026-09-19 15:42 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  22. 2026-09-18 19:27 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  23. 2026-09-17 19:29 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  24. 2026-09-16 14:07 UTCEPSS rescoreEPSS 3.1% · 87th percentile
  25. 2026-09-16 05:14 UTCEPSS rescoreEPSS 3.1% · 87th percentile
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  1. 2026-09-13 16:46 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  2. 2026-09-12 15:00 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  3. 2026-09-11 14:52 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  4. 2026-09-11 09:36 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  5. 2026-09-10 09:34 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  6. 2026-09-08 21:59 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  7. 2026-09-07 16:00 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  8. 2026-09-06 13:47 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  9. 2026-09-05 15:28 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  10. 2026-09-04 05:06 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  11. 2026-09-02 14:11 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  12. 2026-09-01 13:53 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  13. 2026-09-01 04:38 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  14. 2026-08-30 19:16 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  15. 2026-08-30 01:21 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  16. 2026-08-28 21:40 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  17. 2026-08-27 14:24 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  18. 2026-08-26 14:45 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  19. 2026-08-25 13:48 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  20. 2026-08-24 14:16 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  21. 2026-08-24 09:22 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  22. 2026-08-23 00:18 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  23. 2026-08-21 23:48 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  24. 2026-08-20 22:54 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  25. 2026-08-19 17:03 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  26. 2026-08-18 13:47 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  27. 2026-08-17 13:46 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  28. 2026-08-16 14:55 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  29. 2026-08-16 02:13 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  30. 2026-08-15 01:29 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  31. 2026-08-13 21:59 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  32. 2026-08-12 13:50 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  33. 2026-08-11 13:42 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  34. 2026-08-10 23:59 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  35. 2026-08-09 13:46 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  36. 2026-08-08 16:36 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  37. 2026-08-07 16:26 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  38. 2026-08-06 13:46 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  39. 2026-08-05 19:16 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  40. 2026-08-04 15:09 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  41. 2026-08-04 10:37 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  42. 2026-08-03 10:35 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  43. 2026-08-02 02:26 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  44. 2026-08-01 04:15 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  45. 2026-07-30 16:27 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  46. 2026-07-30 01:30 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  47. 2026-07-28 15:35 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  48. 2026-07-26 14:54 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  49. 2026-07-25 14:17 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  50. 2026-07-24 14:17 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  51. 2026-07-23 14:18 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  52. 2026-07-23 02:59 UTCEG score recompute
  53. 2026-07-22 14:07 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  54. 2026-07-21 15:24 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  55. 2026-07-20 17:08 UTCEPSS rescoreEPSS 3.0% · 85th percentile
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  58. 2026-07-18 10:04 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  59. 2026-07-16 17:02 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  60. 2026-07-15 16:57 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  61. 2026-07-15 01:59 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  62. 2026-07-13 22:29 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  63. 2026-07-12 05:46 UTCEPSS rescoreEPSS 3.0% · 85th percentile
  64. 2026-07-11 08:27 UTCEPSS rescoreEPSS 3.0% · 85th percentile

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Frequently asked(5)

What is CVE-2025-55338?
CVE-2025-55338 is a medium-severity vulnerability; its CVE record was published on October 14, 2025. Missing Ability to Patch ROM Code in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.
When was CVE-2025-55338 made public?
CVE-2025-55338 was made public on October 14, 2025: that is the date its CVE record's CNA, Microsoft Corporation, gives for when the vulnerability was made public. The CVE record itself was published on October 14, 2025. EchelonGraph's copy of the record carries a last-modified date of February 22, 2026; the record at its source may have been updated since.
Is CVE-2025-55338 actively exploited?
CVE-2025-55338 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.1% probability of exploitation in the next 30 days (87th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-55338?
CVE-2025-55338 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2025-55338?
A fix for CVE-2025-55338 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-55338 are linked in the Vendor Advisories panel on this page.

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