CVE-2026-77900

LOWCVSS 9.8 · CRITICAL

Signal is active with 3 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-306

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 6 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Peaked 1d ago at 3 mentions (2026-10-08); latest day: 3
  • 6 total mentions across 2 days

Deep dive

Activity timeline6 mentions / 2d
01223Mentions · 2026-10-08: 3Mentions · 2026-10-09: 310-0810-09
Referenced assets3 URLs
Full discourse6 posts
  • Dark Web Intelligence@DailyDarkWeb

    ⚠️ MICROSOFT DISCLOSES 5 CRITICAL CLOUD-SERVICE FLAWS — PARTNER CENTER RATED CVSS 10.0 Microsoft published five critical CVEs on Oct 8 affecting hosted Microsoft services: • CVE-2026-96207 (CVSS 10.0) Partner Center: improper certificate validation, unauthenticated network privilege escalation • CVE-2026-94510 (CVSS 9.9) Bookings: authorization bypass via user-controlled key • CVE-2026-77900 (CVSS 9.8) Azure App Service for Linux: missing authentication, code execution • CVE-2026-88131 (CVSS 9.8) Dataverse: deserialization of untrusted data, RCE • CVE-2026-69435 (CVSS 9.6) Azure SRE Agent: missing authorization, privilege escalation by an authenticated attacker Fixes are deployed on Microsoft's side; no public exploit or in-the-wild exploitation reported so far. Admins should review MSRC entries for any tenant-side guidance. Primary: msrc[.]microsoft[.]com/update-guide/vulnerability/CVE-2026-96207 #DDW #DarkWeb #Microsoft #Azure #CVE #CloudSecurity #CyberSecurity

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  • ♫NØX♥H♪@_Why_Noot

    NØX Echo Lineage Signal: CVE-2026-77900 Entity: Azure App Service Remote Code Execution Lineage: Microsoft MSRC → Public security signal Relationship: - Azure App Service Remote Code Execution → CVE-2026-77900 → Evidence → Operational Risk Current State: DISCLOSED

    1000044
    8 followersView on X
  • Badger Signal@BadgerSignalHQ

    CVE-2026-77900: missing authentication in Azure App Service lets a network-reachable attacker run arbitrary code with no credentials. Patch pending. Restrict inbound access with NSGs or Azure Firewall and enable logging. https://www.badgersignal.com/articles/azure-app-service-remote-code-execution-vulnerability-cve202677900-exploits-missing-authentication #Azure #CloudSecurity #InfoSec https://t.co/ECEEn9Wpyb

    0000013
    8 followersView on X
  • Cybersecurity News DE@cybsecuritynews

    #schwachstellen CVE-2026-77900: Azure App Service mit möglicher Remote-Code-Ausführung ohne Anmeldung #azureappservice #cve202677900 #microsoft https://cybersecurity-news.de/cve-2026-77900-azure-app-service-remote-code-execution

    0000014
    17 followersView on X
  • ♫NØX♥H♪@_Why_Noot

    Watch: - New infrastructure - Exploit reuse - Campaign linkage - Shared indicators - Related vulnerabilities Source: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77900 #NØX #ThreatGraph #CyberThreats #ThreatIntelligence #CVE

    0000022
    8 followersView on X
  • ♫Why♥Not♪@Python_s_

    NØØT Security Alerts Classification: Critical CVE: CVE-2026-77900 Product: Microsoft / Azure App Service Remote Code Execution Summary: CVE-2026-77900 Azure App Service Remote Code Execution Vulnerability. Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network. Evidence: Source: Microsoft MSRC; Official or first-party publication; Remote code execution signal detected Impact: Potential impact includes remote code execution. Action: Prioritize vendor remediation, identify exposed affected systems, and investigate for evidence of exploitation when applicable. Date: Thu, 08 Oct 2026 07:00:00 -0700 Source: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77900 #NØØT #CyberSecurity #InfoSec #ThreatIntelligence #CyberThreats #CVE #CyberDefense #Azure_App_Service_Remote_Code_Execution #CVE_2026_77900

    0000032
    227 followersView on X

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