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CVE-2026-4975: A vulnerability has been found in Tenda AC15 15.03.05.19

48
This month
HIGH 8.8MITIGATE

CVE-2026-4975 is a high-severity flaw (CVSS 8.8) affecting ac15 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been found in Tenda AC15 15.03.05.19. This affects the function formSetCfm of the file /goform/setcfm of the component POST Request Handler. The manipulation of the argument funcpara1 leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Why this priority

  • High severity
  • Public exploit reference

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

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.6% (top 49%)
CISA exploited listNo
WeaknessCWE-119, CWE-121, CWE-787
Published2026-03-27
Last modified2026-10-26
Publisher (CNA): VulDB · Vendor: tenda

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

Am I affected?

Timeline

tenda ac15 firmware MITIGATE
Affected: 15.03.05.19_multi
Fixed in: no fixed release known
Safe to downgrade to: a release before 15.03.05.19_multi
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-2026-4975?

ac15 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-4975 being exploited?

CVE-2026-4975 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-2026-4975 affect?

CVE-2026-4975 affects ac15 firmware. Severity is high (CVSS 8.8). A vulnerability has been found in Tenda AC15 15.03.05.19. This affects the function formSetCfm of the file /goform/setcfm of the component POST Request Handler. The manipulation of the argument funcpara1 leads to stack-based buffer overflow

How urgent is CVE-2026-4975?

Priority 48/100. High severity; Public exploit reference

References

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