What is the CVSS score of CVE-2025-31135?

CVE-2025-31135 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of Microsoft are affected by CVE-2025-31135?

Organizations using Go. should be aware of moderate risk from CVE-2025-31135, a input validation vulnerability rated CVSS 5.3. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2025-31135?

Within 30 days: Identify affected systems running Go. and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Microsoft CVE-2025-31135

MEDIUM

Improper Input Validation (CWE-20)

2025-04-01 security-advisories@github.com

Microsoft Information Disclosure Suse

5.3

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.3 MEDIUM

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

SUSE

MEDIUM

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 18:34 vuln.today

CVE Published

Apr 01, 2025 - 22:15 nvd

MEDIUM 5.3

DescriptionGitHub Advisory

Go-Guerrilla SMTP Daemon is a lightweight SMTP server written in Go. Prior to 1.6.7, when ProxyOn is enabled, the PROXY command will be accepted multiple times, with later invocations overriding earlier ones. The proxy protocol only supports one initial PROXY header; anything after that is considered part of the exchange between client and server, so the client is free to send further PROXY commands with whatever data it pleases. go-guerrilla will treat these as coming from the reverse proxy, allowing a client to spoof its IP address. This vulnerability is fixed in 1.6.7.

AnalysisAI

Go-Guerrilla SMTP Daemon is a lightweight SMTP server written in Go. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-20. Go-Guerrilla SMTP Daemon is a lightweight SMTP server written in Go. Prior to 1.6.7, when ProxyOn is enabled, the PROXY command will be accepted multiple times, with later invocations overriding earlier ones. The proxy protocol only supports one initial PROXY header; anything after that is considered part of the exchange between client and server, so the client is free to send further PROXY commands with whatever data it pleases. go-guerrilla will treat these as coming from the reverse proxy, allowing a client to spoof its IP address. This vulnerability is fixed in 1.6.7. Version information: Prior to 1.6.7.

Affected ProductsAI

See vendor advisory for affected versions.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Same weakness CWE-20 – Improper Input Validation

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Vendor StatusVendor

SUSE

Severity: Medium

Product	Status
SUSE Linux Enterprise Server 16.0	Fixed
openSUSE Tumbleweed	Fixed
SUSE Linux Enterprise Server 16.1	Fixed
SUSE Linux Enterprise Server for SAP applications 16.1	Fixed

CVE-2025-31135 vulnerability details – vuln.today

Back

Microsoft CVE-2025-31135

Severity by source

CVSS VectorGitHub Advisory

Lifecycle Timeline

DescriptionGitHub Advisory

AnalysisAI

Technical ContextAI

Affected ProductsAI

RemediationAI

Same weakness CWE-20 – Improper Input Validation

Same technique Information Disclosure

Vendor StatusVendor

SUSE

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External POC / Exploit Code