VulnSocial

CVE-2026-76420General

LOWCVSS 9.0 · 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

A vulnerability in the internal configuration of the Apache JServ Protocol (AJP) connector for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to impersonate a peer device. This vulnerability is due to incorrect initialization of encryption parameters for the AJP connector at boot time. An attacker could exploit this vulnerability by sending crafted packets to the AJP connector. A successful exploit could allow the attacker to execute commands as root and gain full control over the FMC REST APIs on the affected device. Note: This vulnerability can be exploited only if the valid sftunnel connection between Cisco Secure FMC Software and Cisco Secure FTD Software is down.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-285

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 3 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • General: 2 classified signals
  • Disclosure: 1 classified signal
  • 3 total mentions across 1 day

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-09-16: 3Technical Details · 2026-09-16: 109-16
Signal classification2 categories
General
266.7%
Disclosure
133.3%
Referenced assets1 URL
By indicator
Full discourse3 posts
  • Kaitan ID Security@KaitanSecurity
    Disclosure

    🚨 CRITICAL — CVE-2026-76420 A vulnerability in the internal configuration of the Apache JServ Protocol (AJP) connector for Cisco Secure FMC So… CVSS 9.0 🔴 No patch yet Full analysis → https://sec.kaitan.id/cves/CVE-2026-76420 #Cisco #CyberSecurity #InfoSec

    Post summary

    The tweet announces CVE‑2026‑76420, a critical vulnerability in Cisco Secure FMC’s AJP connector with CVSS 9.0, and notes that no patch is currently available, providing a link for further analysis.

    00000100
    90 followersView on X
  • Francis Rancid@FrancisRancid
    General

    CVE-2026-76420: Cisco Secure FMC Software Peer Impersonation Vulnerability

    Post summary

    The text is a brief mention of CVE-2026-76420, identifying it as a Cisco Secure FMC Software Peer Impersonation Vulnerability, but it contains no additional context regarding PoC, exploits, patches, or active exploitation.

    0000035
    7 followersView on X
  • Francis Rancid@FrancisRancid
    General

    Ya boy CVE-2026-76412 CVE-2026-76413 CVE-2026-76420 https://t.co/wE90SUm7tt

    Post summary

    The text merely lists three CVE identifiers and a shortened link without providing any technical details, PoC, exploit code, patch, or exploitation evidence.

    0000037
    7 followersView on X

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