CVE-2026-80186

HIGHPre-NVD 7.67.6
EchelonGraph scoreMEDIUM confidence

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

Score 7.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-26. The CNA's CVSS baseline 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 4 sources updated this week
7.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.

CVSS v3
7.6
EG Score
7.6HIGHmedium confidence
EG Risk
34
EG Risk 34/100

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)
Severity76% × 45%
Impact severity (EG Severity): CVSS 7.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
41st
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 (7.6): severity, escalated by confirmed exploitation. This CVE's 7.6 is its impact severity (EG Severity), not escalated.

EG Severity
7.6 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% 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 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: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. 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.

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

August 25, 2026

Last Modified

October 16, 2026

Advisory Details (3)

Auto-updated Aug 25, 2026
Patch available. Sources: redhat, github.
GitHub advisoryMentions a patch (unverified)

Stack Overflow in name2utf8 causes DoS and potential code execution · Advisory · bluez/bluez · GitHub

https://github.com/bluez/bluez/security/advisories/GHSA-68h6-5qgp-3975
Red Hat

2524132 – (CVE-2026-80186) CVE-2026-80186 bluez: Stack Overflow in name2utf8 causes DoS and potential code execution

https://bugzilla.redhat.com/show_bug.cgi?id=2524132
Red HatMentions a patch (unverified)

CVE-2026-80186 - 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-2026-80186

Vendor Advisories for CVE-2026-80186(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibbluetooth3 (5.64-0ubuntu1.5) @ jammy2026-10-16ubuntu

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
bluez5.66-1 ... 5.87-4 (28 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
bluez5.82-1.1 ... 5.87-4 (12 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
bluez5.82-1.1 ... 5.87-2 (10 versions)
  • every version up to 5.87-3: fixed in 5.87-3
—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 11× in last 7d / 95× 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 200 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 100 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  2. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  3. 2026-10-18 03:10 UTCEG score recompute
  4. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  5. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  6. 2026-10-16 11:58 UTCEG score recompute
  7. 2026-10-16 11:58 UTCVendor advisory
  8. 2026-10-16 11:58 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  9. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-10-13 06:32 UTCEG score recompute
  13. 2026-10-13 06:32 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  14. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-10-12 14:57 UTCEG score recompute
  16. 2026-10-11 19:21 UTCEG score recompute
  17. 2026-10-11 16:37 UTCEG score recompute
  18. 2026-10-11 13:56 UTCEG score recompute
  19. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  21. 2026-10-10 11:09 UTCEG score recompute
  22. 2026-10-10 11:09 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  23. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  24. 2026-10-09 03:41 UTCEG score recompute
  25. 2026-10-09 03:41 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
Show 75 more
  1. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-10-08 02:17 UTCEG score recompute
  3. 2026-10-08 02:17 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  4. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-10-07 06:41 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  6. 2026-10-06 19:16 UTCEG score recompute
  7. 2026-10-06 19:16 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  8. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-10-06 07:38 UTCEG score recompute
  10. 2026-10-06 07:38 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  11. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-10-05 16:58 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  13. 2026-10-05 03:57 UTCEG score recompute
  14. 2026-10-05 03:57 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  16. 2026-10-04 16:29 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  17. 2026-10-04 05:04 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  18. 2026-10-03 17:40 UTCEG score recompute
  19. 2026-10-03 17:40 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  20. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  21. 2026-10-03 06:17 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  22. 2026-10-02 18:53 UTCEG score recompute
  23. 2026-10-02 18:53 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  24. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  25. 2026-10-02 07:22 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  26. 2026-10-01 19:59 UTCEG score recompute
  27. 2026-10-01 19:59 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  28. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  29. 2026-10-01 07:32 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  30. 2026-09-30 20:09 UTCEG score recompute
  31. 2026-09-30 20:09 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  32. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  33. 2026-09-30 06:21 UTCEG score recompute
  34. 2026-09-30 06:21 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  35. 2026-09-29 08:47 UTCEG score recompute
  36. 2026-09-29 08:47 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  37. 2026-09-28 21:24 UTCEG score recompute
  38. 2026-09-28 21:24 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  39. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  40. 2026-09-28 07:47 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  41. 2026-09-27 20:23 UTCEG score recompute
  42. 2026-09-27 20:23 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  43. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  44. 2026-09-27 08:59 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  45. 2026-09-26 21:34 UTCEG score recompute
  46. 2026-09-26 21:34 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  47. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  48. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  49. 2026-09-25 13:53 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  50. 2026-09-25 02:02 UTCEG score recompute
  51. 2026-09-25 02:02 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  52. 2026-09-24 14:38 UTCEG score recompute
  53. 2026-09-24 14:38 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  54. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  55. 2026-09-24 02:55 UTCEG score recompute
  56. 2026-09-24 02:54 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  57. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  58. 2026-09-23 15:30 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  59. 2026-09-23 04:06 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  60. 2026-09-22 16:40 UTCEG score recompute
  61. 2026-09-22 16:40 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  62. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  63. 2026-09-22 04:46 UTCEG score recompute
  64. 2026-09-22 04:46 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  65. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  66. 2026-09-21 17:22 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  67. 2026-09-21 05:33 UTCEG score recompute
  68. 2026-09-21 05:33 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  69. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  70. 2026-09-20 17:43 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  71. 2026-09-20 06:03 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  72. 2026-09-19 18:39 UTCEG score recompute
  73. 2026-09-19 18:39 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  74. 2026-09-19 07:14 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  75. 2026-09-18 19:50 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-80186?
CVE-2026-80186 is a high-severity vulnerability; its CVE record was published on August 25, 2026. A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This…
When was CVE-2026-80186 made public?
CVE-2026-80186 was made public on August 25, 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 August 25, 2026. EchelonGraph's copy of the record carries a last-modified date of October 16, 2026; the record at its source may have been updated since.
Is CVE-2026-80186 actively exploited?
CVE-2026-80186 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-80186?
CVE-2026-80186 has a CVSS base score of 7.6 (the CNA's own assessment, by redhat; NVD's own analysis pending).
How do I remediate CVE-2026-80186?
A fix for CVE-2026-80186 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-80186 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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