CVE-2026-97799

Status: Undergoing AnalysisHigh (7.8)—

Improper verification of cryptographic signature in Windows Audio Service allows an authorized attacker to elevate privileges locally.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base score: 7.8

Exploitation probability (EPSS)

FIRST hasn't scored this CVE yet (usual for very recent or rejected CVEs).

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1068 Exploitation for Privilege Escalationprivilege escalation95 %
Primary impactT1553 Subvert Trust Controlsdefense impairment40 %

El vector AV:L/PR:L/UI:N indica acceso local sin interacción y la descripción cita escalada de privilegios; la verificación de firma incorrecta sugiere T1553 solo de forma indirecta.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Execution Prevention Threat Intelligence Program Restrict Registry Permissions Privileged Account Management Operating System Configuration Application Isolation and Sandboxing

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Microsoft — Windows^AI

CWEs

CWE-347

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97799

Raw JSON (NVD)

Show

{
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          ],
          "version": "2.0.3",
          "timestamp": "2026-10-13T21:58:32.450423Z"
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  "published": "2026-10-13T19:22:17.780",
  "references": [
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      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97799",
      "source": "secure@microsoft.com"
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      "value": "Improper verification of cryptographic signature in Windows Audio Service allows an authorized attacker to elevate privileges locally."
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  "lastModified": "2026-10-13T23:19:33.503",
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}