What is CVE-2025-51281?

CVE-2025-51281 is a high-severity vulnerability in Dlink Di-8100, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.0/10. Published 2025-08-25.

How severe is CVE-2025-51281?

High severity. CVSS v3 base score is 7.0 out of 10.

Is CVE-2025-51281 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Dlink Di-8100

CVE-2025-51281

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.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (36.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L.

Affected products

Dlink Di-8100
Dlink Di-8100_firmware — versions 16.07.26a1
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-51281?: CVE-2025-51281 is a high-severity vulnerability in Dlink Di-8100, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.0/10. Published 2025-08-25.
How severe is CVE-2025-51281?: High severity. CVSS v3 base score is 7.0 out of 10.
Is CVE-2025-51281 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.