Security September 2026 CVE-2026-77500
AssessmentRelease of invalid pointer or reference in Windows Device Association Service allows an authorized attacker to elevate privileges locally.
Severity Important
CVSS base score 7.8
Impact Elevation of Privilege
Exploitation detected No known exploitation (MSRC assessment)
Exploitability Exploitation More Likely
Publicly disclosed No (MSRC assessment)
EPSS · 30-day forecast 0.3% FIRST forecast dated 10 Nov 2026, for the following 30 days · FIRST percentile 26.9% · about EPSS
Customer action Required: follow the MSRC remediation guidance
More details
CVSS vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Public detection template No Nuclei template is listed in the current collected catalog
Component Windows Device Association Service
Weakness CWE-763: Release of Invalid Pointer or Reference
Issued by Microsoft
Last revised 8 Sep 2026 CVSS 3.1 base metrics Red raises the risk · green lowers it
Attack vector LocalAV:L
Attack complexity LowAC:L
Privileges required LowPR:L
User interaction NoneUI:N
Scope UnchangedS:U
Confidentiality HighC:H
Integrity HighI:H
Availability HighA:H
Updates that fix it6 KBs KB Type Restart Applies to Known issues Other CVEs
KB5122876
Security Update Required Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 and 1 more Resolved USB audio devices might fail to start or produce no sound All CVEs in KB5122876 KB5122878
Security Update Required Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems and 3 more Resolved USB audio devices might fail to start or produce no sound All CVEs in KB5122878 KB5122880
Security Update Required Windows 11 Version 23H2 for ARM64-based Systems, Windows 11 Version 23H2 for x64-based Systems Resolved USB audio devices might fail to start or produce no sound All CVEs in KB5122880 KB5123099
Security Update Required Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016 and 1 more Resolved USB audio devices might fail to start or produce no sound All CVEs in KB5123099 KB5124008
Security Update Required Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems and 1 more Resolved USB audio devices might fail to start or produce no sound Resolved Domain-joined devices might lose their secure trust relationship with the domain All CVEs in KB5124008 KB5124012
Security Update Required Windows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems Resolved USB audio devices might fail to start or produce no sound Resolved Domain-joined devices might lose their secure trust relationship with the domain All CVEs in KB5124012
Source. This summary comes from MSRC's public CVRF document for September 2026. If the MSRC page is blocked in your browser, the NVD and CVE.org records carry the same identifier. None of this says whether your devices are affected.
What changed
Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
2 Nov 2026 · 17:30:39 UTC Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
2 Nov 2026 · 16:27:39 UTC Detection template: No Nuclei template listed · Customer action: Required: apply the update → Required: follow the MSRC remediation guidance · Public disclosure: No → No (MSRC assessment) · Exploitation detected: Not reported by MSRC → No known exploitation (MSRC assessment)
29 Oct 2026 Detection template: Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed · CISA KEV: Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
23 Oct 2026 · 09:33:49 UTC Detection template: No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained · CISA KEV: Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC Page history
Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.
Cite this version Field-level log (61)
Up to 100 recent field edits are shown; older edits may be outside retention.
10 Nov 2026 · 18:32:11 UTC
EPSS 0.3%; scored 9 Nov 2026 → 0.3%; scored 10 Nov 2026 9 Nov 2026 · 22:24:37 UTC
EPSS 0.3%; scored 8 Nov 2026 → 0.3%; scored 9 Nov 2026 8 Nov 2026 · 15:16:05 UTC
EPSS 0.3%; scored 7 Nov 2026 → 0.3%; scored 8 Nov 2026 7 Nov 2026 · 16:12:44 UTC
EPSS 0.3%; scored 6 Nov 2026 → 0.3%; scored 7 Nov 2026 6 Nov 2026 · 19:15:37 UTC
EPSS 0.3%; scored 5 Nov 2026 → 0.3%; scored 6 Nov 2026 6 Nov 2026 · 17:32:22 UTC
Public detection template Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed 6 Nov 2026 · 17:32:22 UTC
Source coverage: public-exploit-code Incomplete → Current 6 Nov 2026 · 17:32:22 UTC
Source coverage: first-epss Incomplete → Current 6 Nov 2026 · 17:32:22 UTC
Source coverage: msrc-cvrf Incomplete → Current 6 Nov 2026 · 16:31:02 UTC
Public detection template No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained 6 Nov 2026 · 16:31:02 UTC
Source coverage: public-exploit-code Current → Incomplete 6 Nov 2026 · 16:31:02 UTC
Source coverage: first-epss Current → Incomplete 6 Nov 2026 · 16:31:02 UTC
Source coverage: msrc-cvrf Current → Incomplete 5 Nov 2026 · 23:42:03 UTC
EPSS 0.3%; scored 4 Nov 2026 → 0.3%; scored 5 Nov 2026 5 Nov 2026 · 02:36:20 UTC
EPSS 0.3%; scored 3 Nov 2026 → 0.3%; scored 4 Nov 2026 4 Nov 2026 · 03:04:37 UTC
EPSS 0.3%; scored 2 Nov 2026 → 0.3%; scored 3 Nov 2026 3 Nov 2026 · 01:53:36 UTC
EPSS 0.3%; scored 1 Nov 2026 → 0.3%; scored 2 Nov 2026 2 Nov 2026 · 17:30:39 UTC
Public detection template Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed 2 Nov 2026 · 17:30:39 UTC
Source coverage: public-exploit-code Incomplete → Current 2 Nov 2026 · 17:30:39 UTC
Source coverage: first-epss Incomplete → Current 2 Nov 2026 · 17:30:39 UTC
Source coverage: msrc-cvrf Incomplete → Current 2 Nov 2026 · 16:27:39 UTC
Public detection template No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained 2 Nov 2026 · 16:27:39 UTC
Source coverage: public-exploit-code Current → Incomplete 2 Nov 2026 · 16:27:39 UTC
Source coverage: first-epss Current → Incomplete 2 Nov 2026 · 16:27:39 UTC
Source coverage: msrc-cvrf Current → Incomplete 2 Nov 2026 · 00:36:51 UTC
EPSS 0.3%; scored 31 Oct 2026 → 0.3%; scored 1 Nov 2026 31 Oct 2026 · 18:22:15 UTC
EPSS 0.3%; scored 30 Oct 2026 → 0.3%; scored 31 Oct 2026 30 Oct 2026 · 18:02:45 UTC
EPSS 0.3%; scored 29 Oct 2026 → 0.3%; scored 30 Oct 2026 29 Oct 2026 · 20:19:26 UTC
Public detection template No Nuclei template listed 29 Oct 2026 · 20:19:26 UTC
Customer action Required: apply the update → Required: follow the MSRC remediation guidance 29 Oct 2026 · 20:19:26 UTC
Publicly disclosed No → No (MSRC assessment) 29 Oct 2026 · 20:19:26 UTC
Exploitation detected Not reported by MSRC → No known exploitation (MSRC assessment) 29 Oct 2026 · 18:33:30 UTC
EPSS 0.3%; scored 28 Oct 2026 → 0.3%; scored 29 Oct 2026 28 Oct 2026 · 20:00:33 UTC
EPSS 0.3%; scored 27 Oct 2026 → 0.3%; scored 28 Oct 2026 27 Oct 2026 · 15:48:13 UTC
EPSS 0.3%; scored 26 Oct 2026 → 0.3%; scored 27 Oct 2026 26 Oct 2026 · 23:57:09 UTC
EPSS 0.3%; scored 25 Oct 2026 → 0.3%; scored 26 Oct 2026 25 Oct 2026 · 17:12:51 UTC
EPSS 0.3%; scored 24 Oct 2026 → 0.3%; scored 25 Oct 2026 25 Oct 2026 · 01:34:18 UTC
EPSS 0.3%; scored 23 Oct 2026 → 0.3%; scored 24 Oct 2026 23 Oct 2026 · 15:51:28 UTC
EPSS 0.3%; scored 22 Oct 2026 → 0.3%; scored 23 Oct 2026 23 Oct 2026 · 09:33:49 UTC
Public exploit code Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed 23 Oct 2026 · 09:33:49 UTC
CISA KEV Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog 23 Oct 2026 · 09:33:49 UTC
Source coverage: public-exploit-code Incomplete → Current 23 Oct 2026 · 09:33:49 UTC
Source coverage: first-epss Incomplete → Current 23 Oct 2026 · 09:33:49 UTC
Source coverage: cisa-kev Incomplete → Current 23 Oct 2026 · 09:33:49 UTC
Source coverage: msrc-cvrf Incomplete → Current 23 Oct 2026 · 08:31:50 UTC
Public exploit code No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained 23 Oct 2026 · 08:31:50 UTC
CISA KEV Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained 23 Oct 2026 · 08:31:50 UTC
Source coverage: public-exploit-code Current → Incomplete 23 Oct 2026 · 08:31:50 UTC
Source coverage: first-epss Current → Incomplete 23 Oct 2026 · 08:31:50 UTC
Source coverage: cisa-kev Current → Incomplete 23 Oct 2026 · 08:31:50 UTC
Source coverage: msrc-cvrf Current → Incomplete 22 Oct 2026 · 17:33:15 UTC
EPSS 0.3%; scored 21 Oct 2026 → 0.3%; scored 22 Oct 2026 21 Oct 2026 · 21:47:24 UTC
EPSS 0.3%; scored 20 Oct 2026 → 0.3%; scored 21 Oct 2026 20 Oct 2026 · 20:53:31 UTC
EPSS 0.3%; scored 19 Oct 2026 → 0.3%; scored 20 Oct 2026 19 Oct 2026 · 15:12:40 UTC
EPSS 0.3%; scored 18 Oct 2026 → 0.3%; scored 19 Oct 2026 18 Oct 2026 · 14:54:30 UTC
EPSS 0.3%; scored 16 Oct 2026 → 0.3%; scored 18 Oct 2026 18 Oct 2026 · 14:54:30 UTC
Link: September 2026 /security?release=2026-Sep#cves 16 Oct 2026 · 16:13:25 UTC
EPSS 0.3%; scored 15 Oct 2026 → 0.3%; scored 16 Oct 2026 15 Oct 2026 · 21:30:54 UTC
EPSS 0.3%; scored 14 Oct 2026 → 0.3%; scored 15 Oct 2026 15 Oct 2026 · 01:07:54 UTC
EPSS 0.3%; scored 13 Oct 2026 → 0.3%; scored 14 Oct 2026 14 Oct 2026 · 11:22:42 UTC
Source coverage: msrc-cvrf Incomplete → Current Explore global source statements, affected packages and advisory history for CVE-2026-77500 . The catalog has a separate collection scope from Microsoft release records.
Overview Affected History ConnectionsCISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.
No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.
Dated risk observations Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.
Immutable source observations 4 recorded revisions Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.
10 Nov 2026 23:21:22 UTC Windows Device Association Service Elevation of Privilege Vulnerability cve-program · CVE-2026-77500 · Published
31 Oct 2026 18:04:47 UTC Windows Device Association Service Elevation of Privilege Vulnerability cve-program · CVE-2026-77500 · Published
30 Oct 2026 22:45:26 UTC Windows Device Association Service Elevation of Privilege Vulnerability cve-program · CVE-2026-77500 · Published
23 Oct 2026 15:48:27 UTC Windows Device Association Service Elevation of Privilege Vulnerability cve-program · CVE-2026-77500 · Published