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PatchSiren cyber security CVE debrief

CVE-2022-26318 WatchGuard CVE debrief

CVE-2022-26318 is a WatchGuard Firebox and XTM Appliances issue identified by CISA as a Known Exploited Vulnerability (KEV). The available official sources describe it as an arbitrary code execution weakness and direct defenders to apply updates per vendor instructions. Because CISA added it to the KEV catalog on 2022-03-25, organizations should treat it as an urgent remediation item.

Vendor
WatchGuard
Product
Firebox and XTM Appliances
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-25
Original CVE updated
2022-03-25
Advisory published
2022-03-25
Advisory updated
2022-03-25

Who should care

Organizations that operate WatchGuard Firebox or XTM Appliances, along with security and network operations teams responsible for perimeter security devices and patch management.

Technical summary

The supplied official sources identify CVE-2022-26318 as an arbitrary code execution vulnerability affecting WatchGuard Firebox and XTM Appliances. CISA’s KEV listing indicates the issue has been observed in exploitation and instructs affected organizations to apply vendor-provided updates.

Defensive priority

Urgent. CISA placed this CVE in the Known Exploited Vulnerabilities catalog on 2022-03-25 and set a due date of 2022-04-15, which signals immediate remediation priority for affected environments.

Recommended defensive actions

  • Identify whether any WatchGuard Firebox or XTM Appliances are in use in your environment.
  • Apply vendor updates or remediation steps per WatchGuard instructions as directed by CISA.
  • Prioritize external-facing or internet-reachable appliances for immediate review.
  • Verify patch status after remediation and document the action taken.
  • Monitor for any vendor or CISA follow-up guidance related to CVE-2022-26318.

Evidence notes

This debrief is limited to the supplied official corpus. CISA’s Known Exploited Vulnerabilities source lists the vulnerability as “WatchGuard Firebox and XTM Appliances Arbitrary Code Execution,” marks it as a KEV item, and states the required action: “Apply updates per vendor instructions.” The supplied timeline also records the KEV date added as 2022-03-25 and due date as 2022-04-15. No additional technical specifics were used beyond those official records.

Sources and references

Verified primary and authoritative sources

  • CVE-2022-26318 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2022-26318

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2022-26318 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2022-26318

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.