CVE-2025-9523: A vulnerability was detected in Tenda AC1206 15.03.06.23

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2025-9523 is a critical-severity flaw (CVSS 9.8) affecting ac1206 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was detected in Tenda AC1206 15.03.06.23. Affected is the function GetParentControlInfo of the file /goform/GetParentControlInfo. The manipulation of the argument mac results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 33%)
CISA exploited list	No
Weakness	CWE-119, CWE-121
Published	2025-08-27
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: tenda

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

Am I affected?

Timeline

2025-08-27 11:15 UTCPublished CVE record published
2026-06-17 10:09 UTCUpdated Record last modified

tenda ac1206 firmware MITIGATE

Affected: 15.03.06.23

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.03.06.23

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-2025-9523?

ac1206 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-9523 being exploited?

CVE-2025-9523 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-2025-9523 affect?

CVE-2025-9523 affects ac1206 firmware. Severity is critical (CVSS 9.8). A vulnerability was detected in Tenda AC1206 15.03.06.23. Affected is the function GetParentControlInfo of the file /goform/GetParentControlInfo. The manipulation of the argument mac results in stack-based buffer overflow. It is possible to

How urgent is CVE-2025-9523?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-0581 MEDIUM 6.3 MITIGATE A vulnerability was determined in Tenda AC1206 15.03.06.23
CVE-2025-7544 HIGH 8.8 MITIGATE A vulnerability was found in Tenda AC1206 15.03.06.23
CVE-2025-4299 HIGH 8.8 UPGRADE A vulnerability was found in Tenda AC1206 up to 15.03.06.23
CVE-2025-4298 HIGH 8.8 UPGRADE A vulnerability was found in Tenda AC1206 up to 15.03.06.23
CVE-2025-3328 HIGH 8.8 MITIGATE A vulnerability was found in Tenda AC1206 15.03.06.23

References

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