9.8

CVE-2022-26318: WatchGuard Firebox and XTM Appliances Arbitrary Code Execution

CVSS: 9.8v3.1CriticalKEVAnalyzed
Published 04-03-2022Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2022-26318 is a critical (CVSS 9.8) vulnerability in WatchGuard Firebox and XTM Appliances. It is known to be exploited: CISA lists it, first on 25-03-2022. EPSS estimates a 78.16% chance of exploitation in the next 30 days, higher than 99.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
78.16%
0%100%
Critical · 0.00 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits1metasploit

Timeline

  1. 04-03-2022
    PublishedVulnerability first disclosed.
  2. 25-03-2022
    Added to CISA KEVWatchGuard Firebox and XTM Appliances Arbitrary Code Execution
  3. 15-04-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

Description

On WatchGuard Firebox and XTM appliances, an unauthenticated user can execute arbitrary code, aka FBX-22786. This vulnerability impacts Fireware OS before 12.7.2_U2, 12.x before 12.1.3_U8, and 12.2.x through 12.5.x before 12.5.9_U2.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

78.16%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

0.00 pp

From 78.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
78.16%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
25-03-2022
Federal due date
15-04-2022

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2022-26318

Public exploits

1 found
  • MetasploitMetasploitremoteVerified

    WatchGuard XTM Firebox Unauthenticated Remote Command Execution

    exploit/linux/http/watchguard_firebox_unauth_rce_cve_2022_26318

    Maturity: weaponized

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Watchguard1 product
  • fireware≥ 12.0.0, < 12.1.3 | ≥ 12.5, < 12.5.9 | ≥ 12.7.0, < 12.7.2 | 12.1.3 | 12.1.3:u1 | 12.1.3:u2 | 12.1.3:u3 | 12.1.3:u4 | 12.1.3:u5 | 12.1.3:u6 | 12.1.3:u7 | 12.5.9:u1 | 12.7.2:u1

1 vendor · 1 product

References

2 links