CVE-2026-8345: A security vulnerability has been detected in D-Link DIR-816 1.10CNB05_R1B011D88210

This month

MEDIUM 6.3MITIGATE

CVE-2026-8345 is a medium-severity flaw (CVSS 6.3) affecting dir-816 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A security vulnerability has been detected in D-Link DIR-816 1.10CNB05_R1B011D88210. Affected by this issue is the function sub_445E7C of the file /goform/singlePortForward. Such manipulation of the argument ip_address leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	3.5% (top 11%)
CISA exploited list	No
Weakness	CWE-74, CWE-77
Published	2026-05-11
Last modified	2026-10-26

Publisher (CNA): VulDB · Vendor: dlink

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-11 23:20 UTCPublished CVE record published
2026-10-26 18:10 UTCUpdated Record last modified

dlink dir-816 firmware MITIGATE

Affected: 1.10cnb05_r1b011d88210

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.10cnb05_r1b011d88210

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-2026-8345?

dir-816 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-8345 being exploited?

CVE-2026-8345 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-2026-8345 affect?

CVE-2026-8345 affects dir-816 firmware. Severity is medium (CVSS 6.3). A security vulnerability has been detected in D-Link DIR-816 1.10CNB05_R1B011D88210. Affected by this issue is the function sub_445E7C of the file /goform/singlePortForward. Such manipulation of the argument ip_address leads to command inje

How urgent is CVE-2026-8345?

Priority 49/100. Public exploit reference

Software pages

D-Link vulnerabilities

Related CVEs

CVE-2026-8344 MEDIUM 6.3 MITIGATE A weakness has been identified in D-Link DIR-816 1.10CNB05_R1B011D88210
CVE-2026-8346 MEDIUM 6.3 MITIGATE A vulnerability was detected in D-Link DIR-816 1.10CNB05_R1B011D88210

References

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