What is the CVSS score of CVE-2025-59538?

CVE-2025-59538 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2025-59538?

Yes, a public proof-of-concept exploit is available for CVE-2025-59538. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-59538?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Vendor patch is available.

Argo Cd CVE-2025-59538

HIGH

Uncaught Exception (CWE-248)

2025-10-01 security-advisories@github.com

GHSA-gpx4-37g2-c8pv

Denial Of Service Kubernetes Microsoft Argo Cd Argoproj

7.5

CVSS 3.1 · Vendor: github

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Vulnerability Assessment

Weakness	CWE CWE-248 OWASP Top 10:2025 A10:2025 - Mishandling of Exceptional Conditions ASVS 5.0 V16 - Security Logging and Error Handling Exception handling completeness
Impact	Service disruption affecting availability. In critical infrastructure, DoS can have cascading effects on dependent systems. With a CVSS score of 7.5 (HIGH), this represents a significant risk.
Exploit ScenarioDerived	An attacker sends specially crafted requests that cause excessive resource consumption (CPU, memory, disk) or trigger a crash in the target application.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 13, 2026

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. For versions 2.9.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.6 and 3.0.17, when the webhook.azuredevops.username and webhook.azuredevops.password are not set in the default configuration, the /api/webhook endpoint crashes the entire argocd-server process when it receives an Azure DevOps Push event whose JSON array resource.refUpdates is empty. The slice index [0] is accessed without a length check, causing an index-out-of-range panic. A single unauthenticated HTTP POST is enough to kill the process. This issue is resolved in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19.

Earlier versions of this analysis (1)

v1 Mar 13, 2026 - 18:18 CVSS 7.5

RemediationAI

A vendor patch is available — apply it immediately. Implement rate limiting and input validation. Use timeout mechanisms for resource-intensive operations. Deploy DDoS protection where applicable.

Affected Packages

go github.com/argoproj/argo-cd no fix

go github.com/argoproj/argo-cd/v2 fix: 2.14.20

go github.com/argoproj/argo-cd/v3 fix: 3.0.19, 3.1.8, 3.2.0-rc2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 3 packages in go

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

A denial of service vulnerability allows an attacker to disrupt the normal functioning of a system, making it unavailable to legitimate users.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (github) PRIMARY 7.5 HIGH

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

SUSE HIGH

Red Hat 5.3 MEDIUM

Primary rating from Vendor (github).

CVSS VectorVendor: github

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

PoC Detected

Oct 07, 2025 - 14:28 vuln.today

Public exploit code

Patch released

Oct 07, 2025 - 14:28 nvd

Patch available

CVE Published

Oct 01, 2025 - 21:16 nvd

HIGH 7.5

Executive ViewAI

Why It Matters

Organizations using Argo CD face notable risk from CVE-2025-59538 rated CVSS 7.5. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available, increasing the risk of exploitation. A patch is available and should be applied as part of regular vulnerability management.

Business Impact: High

Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.

Threat Intelligence Overview

EPSS Score

0.0%

Top 92% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

NVD

CVE.org

EPSS Vendor

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +38

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*

cpe:2.3:a:argoproj:argo_cd:3.2.0:rc1:*:*:*:*:*:*

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Vendor StatusVendor

SUSE

Severity: High

Product	Status
openSUSE Tumbleweed	Fixed

References

Advisories & patches

PATCH https://github.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632baf ADVISORY https://access.redhat.com/errata/RHSA-2025:17730 ADVISORY https://access.redhat.com/errata/RHSA-2025:17731 ADVISORY https://access.redhat.com/errata/RHSA-2025:18093

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