What is the CVSS score of CVE-2025-51281?

CVE-2025-51281 has a CVSS 3.1 base score of 7.0 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L. EPSS exploitation probability: 0.1%.

Which versions of Di 8100 Firmware are affected by CVE-2025-51281?

Organizations using D-Link DI-8100 16.07.26A1 face moderate risk from CVE-2025-51281, a buffer overflow vulnerability rated CVSS 7.0.

Is there a public PoC exploit available for CVE-2025-51281?

Yes, a public proof-of-concept exploit is available for CVE-2025-51281. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-51281?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. If patching is delayed, consider network segmentation to limit exposure.

Di 8100 Firmware CVE-2025-51281

HIGH

Classic Buffer Overflow (CWE-120)

2025-08-25 cve@mitre.org

Denial Of Service Buffer Overflow D-Link Di 8100 Firmware

7.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.0 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:08 vuln.today

PoC Detected

Oct 01, 2025 - 20:00 vuln.today

Public exploit code

CVE Published

Aug 25, 2025 - 15:15 nvd

HIGH 7.0

DescriptionCVE.org

D-Link DI-8100 16.07.26A1 is vulnerable to Buffer Overflow via the en, val and id parameters in the qj_asp function. This vulnerability allows authenticated attackers to cause a Denial of Service (DoS) by sending crafted GET requests with overly long values for these parameters.

AnalysisAI

D-Link DI-8100 16.07.26A1 is vulnerable to Buffer Overflow via the en, val and id parameters in the qj_asp function. Rated high severity (CVSS 7.0), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. D-Link DI-8100 16.07.26A1 is vulnerable to Buffer Overflow via the en, val and id parameters in the qj_asp function. This vulnerability allows authenticated attackers to cause a Denial of Service (DoS) by sending crafted GET requests with overly long values for these parameters. Affected products include: Dlink Di-8100 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.