Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2026-20316

Cisco Secure Firewall Management Center (FMC)

Cisco Secure Firewall Management Center (FMC) · 7.0.0

Watch CVE-2026-20316 Browse KEV feed
Severity
CVSS 5.3 · Medium
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
35.1%
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 Secure Firewall Management Center (FMC). A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

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.

Cisco Affected
Cisco Secure Firewall Management Center (FMC)
7.0.0 7.0.0.1 7.0.1 7.0.1.1 7.0.2 7.2.0 7.0.2.1 7.0.3 7.2.0.1 7.0.4 7.2.1 7.0.5 7.3.0 7.2.2 7.3.1 7.2.3 7.2.3.1 7.2.4 7.0.6 7.2.4.1 7.2.5 7.3.1.1 7.4.0 7.0.6.1 7.2.5.1 7.4.1 7.2.6 7.4.1.1 7.0.6.2 7.2.7 7.2.5.2 7.3.1.2 7.2.8 7.6.0 7.4.2 7.2.8.1 7.0.6.3 7.4.2.1 7.2.9 7.0.7 7.7.0 7.4.2.2 7.2.10 7.6.1 7.4.2.3 7.0.8 7.6.2 7.7.10 7.2.10.1 7.0.8.1 7.6.2.1 7.2.10.2 7.7.10.1 7.4.2.4 7.4.3 7.6.3 7.7.11 7.6.4 10.0.0 7.4.4 7.4.5 7.0.9 7.2.11 7.7.12 7.6.5 7.4.6 10.0.1 7.4.7
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 Previdian 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

A trusted third party reported exploitation.

Known exploited vulnerability sources

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

Learn about Pro API access
Source Added
CISA First 2026-07-29 18:45 UTC
CVE 2026-07-29 19:30 UTC
BleepingComputer 2026-07-29 21:35 UTC
The Hacker News 2026-07-30 05:08 UTC
Cisco PSIRT CSAF 2026-08-11 19:01 UTC
Cisco Talos Blog 2026-09-09 16:08 UTC
Cisco Security Advisory 2026-09-16 18:17 UTC

Detection

Operational artifacts and observed signals

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

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian 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

Potential damage if exploited. Separate from whether attackers are using it.

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

EPSS

35.1%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Use of Hard-coded Password CWE-259

Recent mention · The Hacker News

ThreatsDay: Self-Rewriting Agents, 800+ Flaws Patched, Insider SIM Swaps and 22 More New Stories

Attackers keep finding new keys. The funny part is that defenders keep inventing where to store them. This week, those keys sit in AI tools, exposed services, old bugs, weak logins, and software sold like a monthly subscription. Some attacks use new tricks. Others just reuse...

Read full advisory

All Mentions

Recent mention · The Hacker News

ThreatsDay: Self-Rewriting Agents, 800+ Flaws Patched, Insider SIM Swaps and 22 More New Stories

The Hacker News · 17 Sep 2026

Attackers keep finding new keys. The funny part is that defenders keep inventing where to store them. This week, those keys sit in AI tools, exposed services, old bugs, weak logins, and software sold like a monthly subscription. Some attacks use new tricks. Others just reuse what was already lying around. Both work often enough. So the threat landscape is not getting cleaner. It is just

Recent mention · NCSC Security Advisories

NCSC-2026-0271 [1.01] [M/H] Kwetsbaarheid verholpen in Cisco Secure Firewall Management Center

NCSC Security Advisories · 11 Sep 2026

Cisco heeft een kwetsbaarheid verholpen in Cisco Secure Firewall Management Center. De kwetsbaarheid bevindt zich in de webinterface van Cisco Secure Firewall Management Center en betreft een hard-coded, statisch wachtwoord voor een laaggeprivilegieerd account. Hierdoor kunnen niet-geauthenticeerde externe aanvallers toegang verkrijgen zonder inloggegevens. Deze toegang kan leiden tot het blootstellen van gevoelige data die door het systeem wordt opgeslagen of beheerd. In combinatie met andere kwetsbaarheden kan deze toegang leiden tot privilege-escalatie. Het Amerikaanse CISA heeft de...

Recent mention · Cisco Talos Blog

We've got one word for it, and it's usually the wrong one

Cisco Talos Blog · 10 Sep 2026

In this week's Threat Source newsletter, Joe explores why the word "burnout" often fails to capture the true toll of working in the cybersecurity industry and why we need better language to address it.

Recent mention · Cisco Talos Blog

Active exploitation of Cisco Secure Firewall Management Center vulnerabilities

Cisco Talos Blog · 09 Sep 2026

Cisco Talos is actively tracking the exploitation of two vulnerabilities in Cisco’s Secure Firewall Management Center (FMC) Software.

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 · The Hacker News

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

The Hacker News · 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. 18:17 UTC

    KEV confirmed by Cisco Security Advisory

    Exploitation attested by an external source

  2. 16:08 UTC

    KEV confirmed by Cisco Talos Blog

    Exploitation attested by an external source

  3. 19:01 UTC

    KEV confirmed by Cisco PSIRT CSAF

    Exploitation attested by an external source

  4. 05:08 UTC

    KEV confirmed by The Hacker News

    Exploitation attested by an external source

  5. 21:35 UTC

    KEV confirmed by BleepingComputer

    Exploitation attested by an external source

  6. 19:30 UTC

    KEV confirmed by CVE

    Exploitation attested by an external source

  7. 18:45 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  8. 16:22 UTC

    CVE published

    Vulnerability disclosed publicly

  9. 11:59 UTC

    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.

Start 14-day Pro trial Read API docs
  • 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": 0.35096,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}