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CVE-2025-8956: A vulnerability was found in D-Link DIR‑818L up to 1.05B01

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This week
MEDIUM 6.3MITIGATE

CVE-2025-8956 is a medium-severity flaw (CVSS 6.3) affecting dir-818l firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

  • EPSS top 2%: very likely to be exploited
  • Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score6.3 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance23.5% (top 2%)
CISA exploited listNo
WeaknessCWE-74, CWE-77
Published2025-08-14
Last modified2026-06-17
Publisher (CNA): VulDB · Vendor: dlink

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

dlink dir-818l firmware MITIGATE
Affected: 105b01
Fixed in: no fixed release known
Safe to downgrade to: a release before 105b01
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-8956?

dir-818l firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-8956 being exploited?

CVE-2025-8956 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-8956 affect?

CVE-2025-8956 affects dir-818l firmware. Severity is medium (CVSS 6.3). 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 e

How urgent is CVE-2025-8956?

Priority 51/100. EPSS top 2%: very likely to be exploited; Public exploit reference

Software pages

D-Link vulnerabilities

References

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