CVE-2024-6592 | WatchGuard Firebox Single Sign-On Agent Protocol Authorization Bypass

Incorrect Authorization vulnerability in the protocol communication between the WatchGuard Authentication Gateway (aka Single Sign-On Agent) on Windows and the WatchGuard Single Sign-On Client on Windows and MacOS allows Authentication Bypass.This issue affects the Authentication Gateway: through 12.10.2; Windows Single Sign-On Client: through 12.7; MacOS Single Sign-On Client: through 12.5.4.

Published: 2024-09-25 Last update: 2025-10-15 Assigner: 5d1c2695-1a31-4499-88ae-e847036fd7e3 Source: 5d1c2695-1a31-4499-88ae-e847036fd7e3
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-6592 is rated High Risk (66.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.52%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-6592

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-13 1.94% 2.52% +0.58%
2 2026-02-14 1.67% 1.94% +0.27%
3 2026-02-01 — 1.67% —

Full EPSS history (27 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-6592

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 5d1c2695-1a31-4499-88ae-e847036fd7e3
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 [email protected]

Weakness enumeration for CVE-2024-6592

Affected software / configurations for CVE-2024-6592

Vendor Product Version Raw CPE
watchguard authentication_gateway <= 12.10.2 cpe:2.3:a:watchguard:authentication_gateway:*:*:*:*:*:*:*:*
watchguard single_sign-on_client <= 12.5.4 cpe:2.3:a:watchguard:single_sign-on_client:*:*:*:*:*:macos:*:*
watchguard single_sign-on_client <= 12.7 cpe:2.3:a:watchguard:single_sign-on_client:*:*:*:*:*:windows:*:*

References for CVE-2024-6592

cvelogic Threat Intelligence