CVE-2025-56364

HIGHNVD 5.77.5
EchelonGraph scoreMEDIUM confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-15. NVD baseline CVSS 5.7; sources differ by 1.8.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated
7.5EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (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: 5.7Exploit: No code on recordExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

A use of uninitialized value vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, where the GetDestinationGroupId().Value() method is called without first checking whether a value exists. This leads to a crash when an InvokeCommand is sent without initializing the destination group ID. The issue affects all versions before commit 0360cc3 (Dec 5, 2024) and leads to denial of service through SIGABRT. It is fixed by adding a .HasValue() check before access.

CVSS v3
5.7
EG Score
7.5HIGHmedium confidence
EG Risk
50
EG Risk 50/100

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)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 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 or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.2%
EPSS %ILE
8th
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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 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 2026-10-17). 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 or medium mission impact; Track* at high (mission-essential systems).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: the SSVC and BOD 26-04 blocks below.

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

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation public PoC (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.

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

July 14, 2026

Last Modified

October 13, 2026

Advisory Details (3)

Auto-updated Jul 15, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
Web page

[BUG] one Use of Uninitialized Resource bug · Issue #36711 · project-chip/connectedhomeip · GitHub

https://github.com/project-chip/connectedhomeip/issues/36711
GitHub pull request

Check whether we actually have a GroupId before trying to use it.

Fix merged in project-chip/connectedhomeip PR #36729 on 2024-12-05 — awaiting tagged release

https://github.com/project-chip/connectedhomeip/pull/36729
Web page

GitHub - project-chip/connectedhomeip: Matter (formerly Project CHIP) creates more connections between more objects, simplifying development for manufacturers and increasing compatibility for consumers, guided by the Connectivity Standards Alliance. · GitHub

https://github.com/project-chip/connectedhomeip/

Vendor Advisories for CVE-2025-56364(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 48× 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 96 of 232 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. 4 repeat rows among the latest 100 are merged into the row they repeat. The 136 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  2. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  3. 2026-10-18 05:25 UTCEG score recompute
  4. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  5. 2026-10-16 16:39 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  6. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  7. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  8. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  9. 2026-10-13 09:27 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  10. 2026-10-12 16:55 UTCEG score recompute
  11. 2026-10-11 20:29 UTCEG score recompute
  12. 2026-10-11 18:41 UTCEG score recompute
  13. 2026-10-11 15:16 UTCEG score recompute
  14. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  15. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  17. 2026-10-08 17:10 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  18. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  19. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  20. 2026-10-05 19:44 UTCEG score recompute
  21. 2026-10-05 19:44 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  22. 2026-10-05 18:24 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  23. 2026-10-05 18:01 UTCEG score recompute
  24. 2026-10-05 18:01 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  25. 2026-10-05 18:00 UTCMITRE cvelistV5CVSS v3 → 5.7
Show 71 more
  1. 2026-10-05 17:56 UTCEG score recompute
  2. 2026-10-05 17:56 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  3. 2026-10-05 17:55 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  4. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  5. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  6. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  7. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  8. 2026-10-01 13:50 UTCEG score recompute
  9. 2026-10-01 13:50 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  10. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  11. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  12. 2026-09-28 09:26 UTCEG score recompute
  13. 2026-09-28 09:26 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  14. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  15. 2026-09-26 00:25 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  16. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  17. 2026-09-24 09:58 UTCEG score recompute
  18. 2026-09-24 09:58 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  19. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  20. 2026-09-23 04:16 UTCEG score recompute
  21. 2026-09-23 04:16 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  22. 2026-09-21 21:06 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  23. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  24. 2026-09-19 15:42 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  25. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  26. 2026-09-18 04:59 UTCEG score recompute
  27. 2026-09-18 04:59 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  28. 2026-09-17 19:29 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  29. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  30. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  31. 2026-09-13 23:30 UTCEG score recompute
  32. 2026-09-13 23:30 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  33. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  34. 2026-09-13 07:57 UTCEG score recompute
  35. 2026-09-13 07:57 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  36. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  37. 2026-09-12 14:56 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  38. 2026-09-12 01:49 UTCEG score recompute
  39. 2026-09-12 01:49 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  40. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  41. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  42. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  43. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  44. 2026-09-08 01:52 UTCEG score recompute
  45. 2026-09-08 01:51 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  46. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  47. 2026-09-06 13:48 UTCEG score recompute
  48. 2026-09-06 13:48 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  49. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  50. 2026-09-05 21:22 UTCEG score recompute
  51. 2026-09-05 21:22 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  52. 2026-09-05 15:28 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  53. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  54. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  55. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  56. 2026-09-01 04:38 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  57. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  58. 2026-08-30 18:35 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  59. 2026-08-30 05:27 UTCEG score recompute
  60. 2026-08-30 05:27 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  61. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  62. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  63. 2026-08-28 03:31 UTCEG score recompute
  64. 2026-08-28 03:31 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  65. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  66. 2026-08-27 13:56 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  67. 2026-08-27 00:12 UTCEG score recompute
  68. 2026-08-27 00:12 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5
  69. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  70. 2026-08-26 02:15 UTCEG score recompute
  71. 2026-08-26 02:15 UTCGHSA enrichmentGHSA-3xhc-5w7c-ppw7 · GitHub severity HIGH · GitHub CVSS 7.5

Frequently asked(5)

What is CVE-2025-56364?
CVE-2025-56364 is a high-severity vulnerability; its CVE record was published on July 14, 2026. A use of uninitialized value vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, where the GetDestinationGroupId().Value() method is called without first checking whether a value exists. This leads to a crash when an InvokeCommand is sent without initializing the destination…
When was the CVE record for CVE-2025-56364 published?
The CVE record for CVE-2025-56364 was published on July 14, 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 October 13, 2026; the record at its source may have been updated since.
Is CVE-2025-56364 actively exploited?
CVE-2025-56364 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-56364?
CVE-2025-56364 has a CVSS v3 base score of 5.7 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.5 (HIGH).
How do I remediate CVE-2025-56364?
An upstream fix for CVE-2025-56364 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2025-56364 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-56364

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