CVE-2025-11120: A weakness has been identified in Tenda AC8 16.03.34.06

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HIGH 8.8MITIGATE

CVE-2025-11120 is a high-severity flaw (CVSS 8.8) affecting ac18 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A weakness has been identified in Tenda AC8 16.03.34.06. The affected element is the function formSetServerConfig of the file /goform/SetServerConfig. Executing manipulation can lead to buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be exploited.

Why this priority

High severity
EPSS top 10%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	3.9% (top 10%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
Published	2025-09-28
Last modified	2026-10-09

Publisher (CNA): VulDB · Vendor: tenda

Last updated 2026-10-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-28 21:15 UTCPublished CVE record published
2026-10-09 09:10 UTCUpdated Record last modified

tenda ac18 firmware MITIGATE

Affected: 16.03.34.06

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.03.34.06

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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · wordpress · FIXED · 7.1.4-1.fc46 · FEDORA-2026-907394725e · source

sudo dnf upgrade --advisory=FEDORA-2026-907394725e

Fedora ELN · rhc · FIXED · 0.3.15-1.eln159 · FEDORA-2026-1cd9f35750 · source

sudo dnf upgrade --advisory=FEDORA-2026-1cd9f35750

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/alc9700jmo/CVE/issues/19

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-2025-11120?

ac18 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-11120 being exploited?

CVE-2025-11120 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-2025-11120 affect?

CVE-2025-11120 affects ac18 firmware. Severity is high (CVSS 8.8). A weakness has been identified in Tenda AC8 16.03.34.06. The affected element is the function formSetServerConfig of the file /goform/SetServerConfig. Executing manipulation can lead to buffer overflow. It is possible to launch the attack r

How urgent is CVE-2025-11120?

Priority 58/100. High severity; EPSS top 10%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2025-11326 HIGH 8.8 MITIGATE A weakness has been identified in Tenda AC18 15.03.05.19(6318)
CVE-2025-11327 HIGH 8.8 MITIGATE A security vulnerability has been detected in Tenda AC18 15.03.05.19(6318)
CVE-2025-11328 HIGH 8.8 MITIGATE A vulnerability was detected in Tenda AC18 15.03.05.19(6318)
CVE-2025-11324 HIGH 8.8 MITIGATE A vulnerability was identified in Tenda AC18 15.03.05.19(6318)
CVE-2025-11325 HIGH 8.8 MITIGATE A security flaw has been discovered in Tenda AC18 15.03.05.19(6318)

References

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