CVE-2026-76412Disclosure

LOWCVSS 8.5 · HIGH

Signal is active with 1 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 remote diagnostics debugger of Cisco Secure FMC Software could allow an authenticated, remote attacker to enable the remote diagnostics debugger service. This vulnerability is due to an error when checking the privilege level of a user who is invoking remote diagnostics. An attacker could exploit this vulnerability by authenticating to the device, either through the web-based management interface or the REST API, and using the remote diagnostics debugger to grant a user elevated privileges. A successful exploit could allow the attacker to elevate privileges to root. Notes: To exploit this vulnerability, the attacker must have valid user credentials on the affected device. The CVSSv3.1 Attack Complexity is High due to the multistage process required to fully exploit this vulnerability.

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0.0/ 10 priority

Sources & remediation

Other references

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc2-multivulns-HXgcqRG

Weakness type (CWE)

CWE-264

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

6 mentions across 3 observed days
Momentum state: stable

What's happening

Technical details provided in 3 signals
Disclosure: 4 classified signals
General: 2 classified signals
Peaked 2d ago at 3 mentions (2026-09-16); latest day: 1
6 total mentions across 3 days

Deep dive

Activity timeline6 mentions / 3d

Signal classification2 categories

Disclosure

466.7%

General

233.3%

Referenced assets1 URL

By indicator

https://sec.kaitan.id/cves/CVE-2026-76412

Classification over time

Date	Total	Labels

2026-09-16	3	Disclosure2General1
2026-10-07	2	Disclosure1General1
2026-10-23	1	Disclosure1

Full discourse6 posts

♫NØX♥H♪@_Why_Noot25d
General
NØX Echo Lineage Signal: CVE-2026-76412 Entity: Cisco Secure Firewall Management Center Software Lineage: Cisco PSIRT → Public security signal Relationship: - Cisco Secure Firewall Management Center Software → CVE-2026-76412 → Evidence → Operational Risk [1/4]
Post summary
The text references CVE-2026-76412 affecting Cisco Secure Firewall Management Center Software and frames it as evidence-based operational risk, but it provides no PoC, exploit, active exploitation, patch, or technical vulnerability details.
1000035
8 followersView on X
♫Why♥Not♪@Python_s_25d
Disclosure
NØØT Security Alerts Classification: High CVE: CVE-2026-76412 Product: Cisco / Cisco Secure Firewall Management Center Software [1/8]
Post summary
The text serves as an initial security alert announcing CVE-2026-76412 affecting Cisco Secure Firewall Management Center Software with a High severity classification, indicated as the first part of a thread ([1/8]).
1000071
233 followersView on X
Nicholas Michael Kloster@showxlate9d
Disclosure
i found CVE-2026-76412 using Ablation Impact: An authenticated remote attacker can enable the remote diagnostics debugger service and escalate privileges up to root
Post summary
The text is a brief disclosure of CVE-2026-76412, discovered via Ablation, describing its impact as authenticated remote privilege escalation to root by enabling a diagnostics debugger service.
0000028
145 followersView on X
Kaitan ID Security@KaitanSecurity46d
Disclosure
⚠️ HIGH — CVE-2026-76412 Cisco Secure Firewall Management Center Software Vulnerabilities CVSS 8.5 Full analysis → https://sec.kaitan.id/cves/CVE-2026-76412 #Cisco #CyberSecurity #InfoSec
Post summary
The post discloses CVE-2026-76412, a high-severity vulnerability (CVSS 8.5) in Cisco Secure Firewall Management Center, and directs readers to a detailed analysis.
0000037
90 followersView on X
Francis Rancid@FrancisRancid46d
Disclosure
CVE-2026-76412: Cisco Secure FMC Software Privilege Escalation to root Vulnerability A vulnerability in the remote diagnostics debugger of Cisco Secure FMC Software could allow an authenticated, remote attacker to enable the remote diagnostics debugger service.
Post summary
The text announces CVE-2026-76412, a privilege escalation vulnerability in Cisco Secure FMC Software's remote diagnostics debugger exploitable by authenticated remote attackers, but provides only basic technical details without mentioning any PoC, exploit, patch, or active exploitation.
0000038
7 followersView on X
Francis Rancid@FrancisRancid46d
General
Ya boy CVE-2026-76412 CVE-2026-76413 CVE-2026-76420 https://t.co/wE90SUm7tt
Post summary
The text briefly lists three CVE identifiers (CVE-2026-76412, CVE-2026-76413, CVE-2026-76420) and includes a link, but provides no explicit details about PoCs, exploits, patches, or technical specifics. The link may direct to additional information, but the tweet itself lacks actionable or specific security context.
0000037
7 followersView on X

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What researchers are saying

CVE-2026-76412

♫Why♥Not♪[verified]@Python_s_Disclosure

The text serves as an initial security alert announcing CVE-2026-76412 affecting Cisco Secure Firewall Management Center Software with a High severity classification, indicated as the first part of a thread ([1/8]).

Nicholas Michael Kloster[verified]@showxlateDisclosure

The text is a brief disclosure of CVE-2026-76412, discovered via Ablation, describing its impact as authenticated remote privilege escalation to root by enabling a diagnostics debugger service.

Kaitan ID Security[verified]@KaitanSecurityDisclosure

The post discloses CVE-2026-76412, a high-severity vulnerability (CVSS 8.5) in Cisco Secure Firewall Management Center, and directs readers to a detailed analysis.

Francis Rancid[verified]@FrancisRancidDisclosure

The text announces CVE-2026-76412, a privilege escalation vulnerability in Cisco Secure FMC Software's remote diagnostics debugger exploitable by authenticated remote attackers, but provides only basic technical details without mentioning any PoC, exploit, patch, or active exploitation.

Francis Rancid[verified]@FrancisRancidGeneral

The text briefly lists three CVE identifiers (CVE-2026-76412, CVE-2026-76413, CVE-2026-76420) and includes a link, but provides no explicit details about PoCs, exploits, patches, or technical specifics. The link may direct to additional information, but the tweet itself lacks actionable or specific security context.

♫NØX♥H♪@_Why_NootGeneral

The text references CVE-2026-76412 affecting Cisco Secure Firewall Management Center Software and frames it as evidence-based operational risk, but it provides no PoC, exploit, active exploitation, patch, or technical vulnerability details.