What is the CVSS score of CVE-2025-25742?

CVE-2025-25742 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 4.2%.

Which versions of Dir 853 Firmware are affected by CVE-2025-25742?

Organizations using D-Link DIR-853 A1 FW1.20B07 face critical risk from CVE-2025-25742, a out-of-bounds write vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2025-25742?

Yes, a public proof-of-concept exploit is available for CVE-2025-25742. Prioritise patching immediately. EPSS: 4.2%.

How to fix or mitigate CVE-2025-25742?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

Dir 853 Firmware CVE-2025-25742

CRITICAL

Out-of-bounds Write (CWE-787)

2025-02-12 cve@mitre.org

Buffer Overflow Memory Corruption D-Link Dir 853 Firmware

9.8

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:26 vuln.today

PoC Detected

Mar 05, 2025 - 19:15 vuln.today

Public exploit code

CVE Published

Feb 12, 2025 - 17:15 nvd

CRITICAL 9.8

DescriptionNVD

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

AnalysisAI

D-Link DIR-853 A1 FW1.20B07 was discovered to contain a stack-based buffer overflow vulnerability via the AccountPassword parameter in the SetSysEmailSettings module. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. D-Link DIR-853 A1 FW1.20B07 was discovered to contain a stack-based buffer overflow vulnerability via the AccountPassword parameter in the SetSysEmailSettings module. Affected products include: Dlink Dir-853 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).