KEV Intelligence

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2026-20316

Cisco Secure Firewall Management Center (FMC)

Cisco / Cisco Secure Firewall Management Center (FMC) · 7.0.0

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Severity
CVSS 5.3 · Medium
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
0.8%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-20316 is an unauthenticated vulnerability affecting Cisco Cisco Secure Firewall Management Center (FMC). A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

Cisco / Cisco Secure Firewall Management Center (FMC) 7.0.0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Cisco Secure Firewall Management Center (FMC)

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems. This vulnerability is due to the presence of static user credentials for a low-privileged account. An attacker could exploit this vulnerability by using the account to log in to an affected system.

A successful exploit could allow the attacker to log in to the affected system and access sensitive data as the low-privileged user.  Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.   Cisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates. The reason is that this vulnerability can be used with other Cisco Secure FMC Software vulnerabilities to elevate privileges.

Vendor Product Affected Status
Cisco Cisco Secure Firewall Management Center (FMC) 7.4.1 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.2.6 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.4.1.1 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.0.6.2 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.2.7 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.2.5.2 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.3.1.2 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.2.8 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.6.0 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.4.2 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.2.8.1 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.0.6.3 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.4.2.1 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.2.9 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.0.7 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.7.0 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.4.2.2 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.2.10 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.6.1 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.4.2.3 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.0.8 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.6.2 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.7.10 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.2.10.1 Affected
Cisco Cisco Secure Firewall Management Center (FMC) 7.0.8.1 Affected
Published
29 Jul 2026
Exploitation Reported
29 Jul 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

edge cisa

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-20316
  • cisco-sa-fmc-static-cred-BET3Cjh sec.cloudapps.cisco.com · CVE Record https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurity...

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 29 Jul 2026

Independent exploitation attestation added to the KEV Intelligence record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source Added
CISA First 2026-07-29 18:45 UTC
CVE 2026-07-29 19:30 UTC
BleepingComputer 2026-07-29 21:35 UTC
TheHackerNews 2026-07-30 05:08 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
0
User-Agents
0

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS

0.8%

Weaknesses

Use of Hard-coded Password CWE-259

Recent mention · Zero Day Initiative Published Advisories

ZDI-26-533: Cisco Secure Firewall Management Center login.cgi Authentication Bypass Vulnerability

This vulnerability allows remote attackers to bypass authentication on affected installations of Cisco Secure Firewall Management Center. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.8. The following CVEs are assigned:...

Read full advisory

All Mentions

Recent mention · Zero Day Initiative Published Advisories

ZDI-26-533: Cisco Secure Firewall Management Center login.cgi Authentication Bypass Vulnerability

Zero Day Initiative Published Advisories · 11 Aug 2026

This vulnerability allows remote attackers to bypass authentication on affected installations of Cisco Secure Firewall Management Center. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.8. The following CVEs are assigned: CVE-2026-20316.

Recent mention · TheHackerNews

Cisco FMC Zero-Day Actively Exploited, Static Credentials Could Expose Sensitive Data

TheHackerNews · 30 Jul 2026

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a newly disclosed security flaw impacting Cisco Secure Firewall Management Center (FMC) Software to its Known Exploited Vulnerabilities (KEV) catalog, following reports of zero-day exploitation. The vulnerability, assigned CVE-2026-20316 (CVSS score: 5.3), could permit an unauthenticated, remote attacker to log

Recent mention · BleepingComputer

Cisco warns of FMC static credential flaw exploited in zero-day attacks

BleepingComputer · 29 Jul 2026

Cisco is warning that a high-severity Secure Firewall Management Center (FMC) static credential vulnerability, tracked as CVE-2026-20316, was actively exploited in zero-day attacks to gain unauthorized access to vulnerable devices. [...]

Recent mention · Cisco Security Advisory

Cisco Secure Firewall Management Center Software Static Credential Vulnerability

Cisco Security Advisory · 29 Jul 2026

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems. This vulnerability is due to the presence of static user credentials for a low-privileged account. An attacker could exploit this vulnerability by using the account to log in to an affected system. A successful exploit could allow the attacker to log in to the affected system and access sensitive data as the low-privileged...

Timeline

From disclosure to observed exploitation

  1. KEV confirmed by TheHackerNews

    Exploitation attested by an external source

  2. KEV confirmed by BleepingComputer

    Exploitation attested by an external source

  3. KEV confirmed by CVE

    Exploitation attested by an external source

  4. Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  5. CVE published

    Vulnerability disclosed publicly

  6. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-20316

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-20316",
  "confidence": "Confirmed",
  "cvss_score": 5.3,
  "cvss_estimated": false,
  "epss_score": 0.00788,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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