What is CVE-2025-25742?

CVE-2025-25742 is a critical-severity vulnerability in Dlink Dir-853, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2025-02-12.

How severe is CVE-2025-25742?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-25742 known to be exploited?

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

Buffer overflow in Dlink Dir-853

CVE-2025-25742

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.

Vulnerability class: Buffer Overflow

Published 2025-02-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Dlink Dir-853 — versions a1
Dlink Dir-853 Firmware — versions 1.20b07

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

yikesoftware/yikesoftware

References

dear-sunshine-ba5.notion.site/D-Link-DIR-853-3-1812386a664480feaf1ceab444b132b3 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-25742?: CVE-2025-25742 is a critical-severity vulnerability in Dlink Dir-853, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2025-02-12.
How severe is CVE-2025-25742?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-25742 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.