CVE-2025-67073: A Buffer overflow vulnerability in function fromAdvSetMacMtuWan of bin httpd in Tenda AC10V4.0 V16.03.10.20 al

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2025-67073 is a critical-severity flaw (CVSS 9.8) affecting ac10 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Buffer overflow vulnerability in function fromAdvSetMacMtuWan of bin httpd in Tenda AC10V4.0 V16.03.10.20 allows remote attackers to cause denial of service and possibly code execution by sending a post request with a crafted payload (field `serviceName`) to /goform/AdvSetMacMtuWan.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-120
Published	2025-12-17
Last modified	2026-10-13

Publisher (CNA): MITRE · Vendor: tenda

Last updated 2026-10-13 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-17 20:15 UTCPublished CVE record published
2026-10-13 11:10 UTCUpdated Record last modified

tenda ac10 firmware MITIGATE

Affected: 16.03.10.20

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.03.10.20

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 · conan · FIXED · 2.31.0-1.fc46 · FEDORA-2026-ba58084ab5 · source

sudo dnf upgrade --advisory=FEDORA-2026-ba58084ab5

Fedora ELN · tesseract · FIXED · 5.5.4-1.eln159 · FEDORA-2026-866cf60ee6 · source

sudo dnf upgrade --advisory=FEDORA-2026-866cf60ee6

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-2025-67073?

ac10 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-67073 being exploited?

CVE-2025-67073 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-2025-67073 affect?

CVE-2025-67073 affects ac10 firmware. Severity is critical (CVSS 9.8). A Buffer overflow vulnerability in function fromAdvSetMacMtuWan of bin httpd in Tenda AC10V4.0 V16.03.10.20 allows remote attackers to cause denial of service and possibly code execution by sending a post request with a crafted payload (fie

How urgent is CVE-2025-67073?

Priority 60/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

Apache HTTP Server vulnerabilities

Related CVEs

CVE-2025-12622 HIGH 8.8 MITIGATE A vulnerability was determined in Tenda AC10 16.03.10.13
CVE-2025-67074 MEDIUM 6.5 MITIGATE A Buffer overflow vulnerability in function fromAdvSetMacMtuWan of bin httpd in Tenda AC10V4.0 V16.03.10.20 al
CVE-2025-57218 MEDIUM 5.3 MITIGATE Tenda AC10 v4.0 firmware v16.03.10.09_multi_TDE01 was discovered to contain a stack overflow via the security_
CVE-2025-57220 MEDIUM 5.3 MITIGATE An input validation flaw in the 'ate' service of Tenda AC10 v4.0 firmware v16.03.10.09_multi_TDE01 to escalate
CVE-2026-5548 HIGH 8.8 MITIGATE A vulnerability was found in Tenda AC10 16.03.10.10_multi_TDE01

References

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