What is the CVSS score of CVE-2025-25740?

CVE-2025-25740 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L. EPSS exploitation probability: 0.4%.

Which versions of Dir 853 Firmware are affected by CVE-2025-25740?

Organizations using D-Link DIR-853 A1 FW1.20B07 should be aware of moderate risk from CVE-2025-25740, a stack-based buffer overflow vulnerability rated CVSS 5.5.

Is there a public PoC exploit available for CVE-2025-25740?

Yes, a public proof-of-concept exploit is available for CVE-2025-25740. Prioritise patching immediately. EPSS: 0.4%.

How to fix or mitigate CVE-2025-25740?

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

Dir 853 Firmware CVE-2025-25740

MEDIUM

Stack-based Buffer Overflow (CWE-121)

2025-02-14 cve@mitre.org

Buffer Overflow D-Link Stack Overflow Dir 853 Firmware

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:26 vuln.today

PoC Detected

May 02, 2025 - 17:53 vuln.today

Public exploit code

CVE Published

Feb 14, 2025 - 15:15 nvd

MEDIUM 5.5

DescriptionCVE.org

D-Link DIR-853 A1 FW1.20B07 was discovered to contain a stack-based buffer overflow vulnerability via the PSK parameter in the SetQuickVPNSettings module.

AnalysisAI

D-Link DIR-853 A1 FW1.20B07 was discovered to contain a stack-based buffer overflow vulnerability via the PSK parameter in the SetQuickVPNSettings module. Rated medium severity (CVSS 5.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-121. D-Link DIR-853 A1 FW1.20B07 was discovered to contain a stack-based buffer overflow vulnerability via the PSK parameter in the SetQuickVPNSettings module. Affected products include: Dlink Dir-853 Firmware.

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.