CVE-2025-8956: D-Link DIR‑818L ssdpcgi cgibin getenv command injection
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-04 15:41 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
A vulnerability was found in D-Link DIR‑818L up to 1.05B01. This issue affects the function getenv of the file /htdocs/cgibin of the component ssdpcgi. The manipulation leads to command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
Description quoted from the CVE record (assigned by VulDB, published 2025-08-14).
Weakness: Command Injection; Injection
How it can be exploited
Exploitable over the network with low attack complexity with no special attack requirements needing low privileges and no user interaction. Impact: confidentiality low, integrity low, availability low. CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CISA assessment (SSVC): CISA assesses that a public proof of concept exists. Automatable: no. Technical impact: partial.
Public exploit evidence (Exploit Observer)
Exploit Observer has not indexed exploit code for this CVE, but the CVE record links exploit code (see the references below). Check Exploit Observer for more.
Live scores
- EPSS
- 0.271
likely to be attacked soon - VEDAS
- 0.173
little exploit evidence - On CISA KEV
- Not listed
- Detection rule
- No public rule yet
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| D-Link DIR‑818L | version 1.05B01 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
No fixed version or vendor advisory is listed in the CVE record yet. Watch the vendor’s security page.
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
References
Exploit code
Technical analysis and advisories
- VDB-319925 | D-Link DIR‑818L ssdpcgi cgibin getenv command injection (vdb-entry, technical-description)
- Submit #627835 | Dlink D-Link DIR‑818L Firmware versions ≤ v1.05B01 Remote Arbitrary Command Execution (third-party-advisory)
Other references
- VDB-319925 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
- https://www.dlink.com/ (product)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.
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