CVE-2026-25507

MEDIUMNVD 6.36.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.3 under NVD CVSS v3. EPSS exploit probability: 0.2% (14th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3

Also known asEUVD-2026-5377 (ENISA EUVD)Source: ENISA EUVD

6.3EG
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: 0.2%CVSS: 6.3Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, a use-after-free vulnerability was reported in the BLE provisioning transport (protocomm_ble) layer. The issue can be triggered by a remote BLE client while the device is in provisioning mode. The vulnerability occurred when provisioning was stopped with keep_ble_on = true. In this configuration, internal protocomm_ble state and GATT metadata were freed while the BLE stack and GATT services remained active. Subsequent BLE read or write callbacks dereferenced freed memory, allowing a connected or newly connected client to trigger invalid memory acces. This issue has been patched in versions 5.5.3, 5.4.4, 5.3.5, 5.2.7, and 5.1.7.

CVSS v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100

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)
Severity63% × 45%
Impact severity (EG Severity): CVSS 6.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 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 every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
14th
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 (6.3): severity, escalated by confirmed exploitation. This CVE's 6.3 is its impact severity (EG Severity), not escalated.

EG Severity
6.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS. 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 every mission impact level.CISA BOD 26-04: 60 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 every mission impact level.

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 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 partial (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

February 4, 2026

Last Modified

June 17, 2026

Advisory Details (8)

Auto-updated Aug 7, 2026
Fix named in the CVE record. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Use-after-free Vulnerability in BLE Provisioning · Advisory · espressif/esp-idf · GitHub

https://github.com/espressif/esp-idf/security/advisories/GHSA-h7r3-gmg9-xjmg
GitHub commit

commit dba9a7dc01e4 (espressif/esp-idf)

Fix landed in espressif/esp-idf commit dba9a7dc01e4 — awaiting tagged release

https://github.com/espressif/esp-idf/commit/dba9a7dc01e4dab14c77d328f6a6f46369aeee63
GitHub commit

commit cde7b7362adc (espressif/esp-idf)

Fix landed in espressif/esp-idf commit cde7b7362adc — awaiting tagged release

https://github.com/espressif/esp-idf/commit/cde7b7362adc15638c141c249681cbe5d23de663
GitHub commit

commit 894c28afe3f2 (espressif/esp-idf)

Fix landed in espressif/esp-idf commit 894c28afe3f2 — awaiting tagged release

https://github.com/espressif/esp-idf/commit/894c28afe3f2f8f31ff25b64191883517dddb5cf
GitHub commit

commit 4c3fdcd316f7 (espressif/esp-idf)

Fix landed in espressif/esp-idf commit 4c3fdcd316f7 — awaiting tagged release

https://github.com/espressif/esp-idf/commit/4c3fdcd316f780bab4ae5aa73c9626ea9fe24ac6
GitHub commit

commit 47552ff4fd82 (espressif/esp-idf)

Fix landed in espressif/esp-idf commit 47552ff4fd82 — awaiting tagged release

https://github.com/espressif/esp-idf/commit/47552ff4fd824caf38215468ebd2f31fb5f36d70
GitHub commit

commit 1ff264abf250 (espressif/esp-idf)

Fix landed in espressif/esp-idf commit 1ff264abf250 — awaiting tagged release

https://github.com/espressif/esp-idf/commit/1ff264abf2504cade46f0ce3a03f821310bcf6d7
GitHub commit

commit 0540c85140c2 (espressif/esp-idf)

Fix landed in espressif/esp-idf commit 0540c85140c2 — awaiting tagged release

https://github.com/espressif/esp-idf/commit/0540c85140c2c06c0cbecc8843277ea676d5c4a9

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 39× 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 99 of 203 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 104 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  3. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  4. 2026-10-31 01:25 UTCOSV refresh
  5. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  6. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  7. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  8. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  9. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  10. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  11. 2026-10-25 14:40 UTCEG score recompute
  12. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  13. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  14. 2026-10-23 04:30 UTCEG score recompute
  15. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  16. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  17. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  18. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  19. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  20. 2026-10-18 03:52 UTCEG score recompute
  21. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  22. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  23. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  24. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  25. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.4% · 28th percentile
Show 74 more
  1. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  2. 2026-10-12 16:19 UTCEG score recompute
  3. 2026-10-11 20:01 UTCEG score recompute
  4. 2026-10-11 17:14 UTCEG score recompute
  5. 2026-10-11 14:46 UTCEG score recompute
  6. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  9. 2026-10-08 17:36 UTCOSV refresh
  10. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  11. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  12. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  13. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  14. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  16. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  17. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  18. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  19. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  20. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  21. 2026-09-24 14:03 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  22. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  23. 2026-09-18 23:30 UTCOSV refresh
  24. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  25. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  26. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  27. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  28. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  29. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  30. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  31. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  32. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  33. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  34. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  35. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  36. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  37. 2026-08-31 03:02 UTCOSV refresh
  38. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  39. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  40. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  41. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  42. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  43. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  44. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  45. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  46. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  47. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  48. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  49. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  50. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  51. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  52. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  53. 2026-08-14 11:12 UTCEG score recompute
  54. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  55. 2026-08-13 03:31 UTCEG score recompute
  56. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  57. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  58. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  59. 2026-08-09 15:51 UTCEG score recompute
  60. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  61. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  62. 2026-08-07 22:46 UTCEG score recompute
  63. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  64. 2026-08-06 04:22 UTCEG score recompute
  65. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  66. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  67. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  68. 2026-08-02 21:25 UTCEG score recompute
  69. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  70. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  71. 2026-07-30 23:21 UTCOSV refresh
  72. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  73. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  74. 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.2% · 9th percentile

Frequently asked(5)

What is CVE-2026-25507?
CVE-2026-25507 is a medium-severity vulnerability; its CVE record was published on February 4, 2026. ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, a use-after-free vulnerability was reported in the BLE provisioning transport (protocomm_ble) layer. The issue can be triggered by a remote BLE client while the device is in…
When was the CVE record for CVE-2026-25507 published?
The CVE record for CVE-2026-25507 was published on February 4, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-25507 actively exploited?
CVE-2026-25507 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (14th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-25507?
CVE-2026-25507 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-25507?
The CVE record for CVE-2026-25507 names the fix: "This issue has been patched in versions 5.5.3, 5.4.4, 5.3.5, 5.2.7, and 5.1.7."

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