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CVE-2025-5228VulnerabilityPublished

CVE-2025-5228: D-Link DI-8100 · Stack-based Buffer Overflow

Affects D-Link DI-8100Source CVE Database V5

0

Not known to be exploited · CVSS 8.7 High.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
3.1% chance of exploitation in 30 days – higher than 87% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

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

    Not in CISA KEV and no source reports exploitation

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

    No attack traffic recorded by OffSeq Mirage sensors

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 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
D-Link DI-8100Affected
  • =20250523
Fixed in–

AI-suggested

European organizations should immediately identify any D-Link DI-8100 devices running firmware up to version 20250523 within their networks. Network segmentation should be enforced to restrict access to router management interfaces strictly to authorized personnel and systems. Implementing network access controls such as VLANs, firewall rules, and NAC (Network Access Control) can limit exposure to local network attacks. Monitoring network traffic for unusual activity targeting the /login.cgi endpoint or anomalous HTTP requests can help detect exploitation attempts. Organizations should also consider disabling remote management features if enabled and changing default credentials to strong, unique passwords. Until an official patch is released, deploying compensating controls such as isolating vulnerable devices on dedicated management VLANs or physically restricting access may reduce risk. Additionally, organizations should stay informed about vendor advisories for patches or firmware updates and plan prompt deployment once available. Conducting internal penetration testing and vulnerability assessments focusing on router security can further identify and mitigate risks.

Description

A vulnerability was found in D-Link DI-8100 up to 20250523. It has been classified as critical. Affected is the function httpd_get_parm of the file /login.cgi of the component jhttpd. The manipulation of the argument notify leads to stack-based buffer overflow. The attack can only be initiated within the local network. The exploit has been disclosed to the public and may be used.

References

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