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Vulnerabilities

Vulnerability · CVE-2017-8055

WatchGuard Fireware allows user enumeration, e.g., in the Firebox XML-RPC login handler.

Published Apr 22, 2017 · catalog updated Jun 17, 2026 · WatchGuard Fireware allows user

Last checked Nov 8, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2017-8055. EPSS is 1.59%. Act only if a listed version of WatchGuard Fireware allows user is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (WatchGuard Fireware allows user).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.59%
Remediation
Version ranges on file
Affected products
cpe watchguard/fireware

WatchGuard Fireware allows user enumeration, e.g., in the Firebox XML-RPC login handler. A login request that contains a blank password sent to the XML-RPC agent in Fireware v11.12.1 and earlier returns different responses for valid and invalid usernames. An attacker could exploit this vulnerability to enumerate valid usernames on an affected Firebox.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe watchguard/fireware<= 11.2.1

How to fix CVE-2017-8055

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2017-8055. EPSS is 1.59%. Act only if a listed version of WatchGuard Fireware allows user is installed.

Which versions are affected?

Compare what you have installed with <= 11.2.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-203: Observable Discrepancy. EPSS 1.59%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WatchGuard Fireware security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 22, 2017 · Monitored products — high

    Detected

    WatchGuard Fireware allows user enumeration, e.g., in the Firebox XML-RPC login handler. A login request that contains a blank password sent to the XML-RPC agent in Fireware v11.12.1 and earlier returns different responses for valid and invalid usernames. An attacker could exploit this vulnerability to enumerate valid usernames on an affected Firebox.

  2. Jun 17, 2026 · Monitored products — high

    Updated

    WatchGuard Fireware allows user enumeration, e.g., in the Firebox XML-RPC login handler. A login request that contains a blank password sent to the XML-RPC agent in Fireware v11.12.1 and earlier returns different responses for valid and invalid usernames. An attacker could exploit this vulnerability to enumerate valid usernames on an affected Firebox.

Sources

  • CVE.orgVulnerability recordCVE-2017-8055

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2017-8055

    WatchGuard Fireware allows user enumeration, e.g., in the Firebox XML-RPC login handler. A login request that contains a blank password sent to the XML-RPC agent in Fireware v11.12.1 and earlier returns different responses for valid and invalid usernames. An attacker could exploit this vulnerability to enumerate valid usernames on an affected Firebox.

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttps://packetstormsecurity.com/files/142177/watchguardfbxtm-xxeinject.txt

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Packet Storm SecurityNov 8, 2026
  • CVE.orgNov 7, 2026
  • Monitored products — highNov 6, 2026