CVE-2025-70656: Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the mac parameter of the sub_65B5C functi

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HIGH 7.5REMOTEMITIGATE

CVE-2025-70656 is a high-severity flaw (CVSS 7.5) affecting ax1806 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the mac parameter of the sub_65B5C function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

Why this priority

High 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	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-121
Published	2026-01-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tenda

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

Am I affected?

Timeline

2026-01-15 17:16 UTCPublished CVE record published
2026-06-17 10:03 UTCUpdated Record last modified

tenda ax1806 firmware MITIGATE

Affected: 1.0.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0.1

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-2025-70656?

ax1806 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-70656 being exploited?

CVE-2025-70656 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-2025-70656 affect?

CVE-2025-70656 affects ax1806 firmware. Severity is high (CVSS 7.5). Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the mac parameter of the sub_65B5C function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

How urgent is CVE-2025-70656?

Priority 44/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-71021 HIGH 7.5 MITIGATE Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the serverName parameter of the sub_65A28
CVE-2025-71020 HIGH 7.5 MITIGATE Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the security parameter of the sub_4C408 f
CVE-2025-71019 HIGH 7.5 MITIGATE Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the wanSpeed parameter of the sub_65B5C f
CVE-2025-70753 HIGH 7.5 MITIGATE Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the security_5g parameter of the sub_4CA5
CVE-2025-70747 HIGH 7.5 MITIGATE Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the serviceName parameter of the sub_65A2

References

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