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CVE-2025-10666VulnerabilityPublished Updated

CVE-2025-10666: D-Link DIR-825 · Buffer Overflow

Affects D-Link DIR-825Source CVE Database V5

0

Not known to be exploited · public exploit available (Exploit-DB) · CVSS 8.7 High · end of life, no fix coming : replace or isolate D-Link DIR-825; no fix will be released.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
3.3% chance of exploitation in 30 days – higher than 88% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
None coming – the product is end of life
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 18 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  4. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by VulDB

    , 8 hours before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. In Threat Radar

    record ingested

    , 9 minutes after disclosure

  4. First Exploit-DB entry (opens in a new tab)

    D-Link DIR-825 Rev.B 2.10 - Stack Buffer Overflow (DoS)

    , 137 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

No fix will be released: D-Link DIR-825 is end of life. Replace it, or isolate it from untrusted networks until you can.

Affected software

ProductAffectedFixed in
D-Link DIR-825Affected
  • =2.0
  • =2.1
  • =2.2
  • =2.3
  • =2.4
  • =2.5
  • =2.6
  • =2.7
  • =2.8
  • =2.9
  • =2.10
Fixed in–

AI-suggested

Given the absence of official patches, the most effective mitigation is to replace all affected D-Link DIR-825 devices with newer, supported hardware that receives regular security updates. If immediate replacement is not feasible, organizations should isolate vulnerable routers from critical network segments using VLANs or firewalls to limit exposure. Disabling remote management interfaces and restricting administrative access to trusted IP addresses can reduce attack surface. Network monitoring should be enhanced to detect anomalous traffic patterns indicative of exploitation attempts. Employing intrusion detection/prevention systems (IDS/IPS) with signatures for known exploits targeting this vulnerability can provide additional defense. Regularly auditing network devices for outdated firmware and maintaining an inventory of hardware assets will help identify and remediate vulnerable equipment proactively. Finally, educating IT staff about the risks of unsupported devices and the importance of timely upgrades is crucial.

Description

A security flaw has been discovered in D-Link DIR-825 up to 2.10. Affected by this vulnerability is the function sub_4106d4 of the file apply.cgi. The manipulation of the argument countdown_time results in buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be exploited. This vulnerability only affects products that are no longer supported by the maintainer.

References

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