CVE-2025-69700: Tenda FH1203 V2.0.1.6 contains a stack-based buffer overflow vulnerability in the modify_add_client_prio funct

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HIGH 7.5REMOTEMITIGATE

CVE-2025-69700 is a high-severity flaw (CVSS 7.5) affecting fh1203 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tenda FH1203 V2.0.1.6 contains a stack-based buffer overflow vulnerability in the modify_add_client_prio function, which is reachable via the formSetClientPrio CGI handler.

Why this priority

High severity
EPSS top 9%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	4.0% (top 9%)
CISA exploited list	No
Weakness	CWE-121
Published	2026-02-23
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

2026-02-23 14:16 UTCPublished CVE record published
2026-06-17 10:00 UTCUpdated Record last modified

tenda fh1203 firmware MITIGATE

Affected: 2.0.1.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.1.6

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 · python-configargparse · FIXED · 1.9.0-1.fc46 · FEDORA-2026-3ab7c44443 · source

sudo dnf upgrade --advisory=FEDORA-2026-3ab7c44443

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-2025-69700?

fh1203 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-69700 being exploited?

CVE-2025-69700 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-2025-69700 affect?

CVE-2025-69700 affects fh1203 firmware. Severity is high (CVSS 7.5). Tenda FH1203 V2.0.1.6 contains a stack-based buffer overflow vulnerability in the modify_add_client_prio function, which is reachable via the formSetClientPrio CGI handler.

How urgent is CVE-2025-69700?

Priority 59/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-6113 HIGH 8.8 MITIGATE A vulnerability, which was classified as critical, was found in Tenda FH1203 2.0.1.6
CVE-2024-32311 MEDIUM 6.5 MITIGATE Tenda FH1203 v2.0.1.6 firmware has a stack overflow vulnerability via the adslPwd parameter in the formWanPara
CVE-2024-32299 HIGH 8.8 MITIGATE Tenda FH1203 v2.0.1.6 firmware has a stack overflow vulnerability via the PPW parameter in the fromWizardHandl
CVE-2024-32283 HIGH 7.3 MITIGATE Tenda FH1203 V2.0.1.6 firmware has a command injection vulnerablility in formexeCommand function via the cmdin
CVE-2024-30607 HIGH 8.0 MITIGATE Tenda FH1203 v2.0.1.6 has a stack overflow vulnerability in the deviceId parameter of the saveParentControlInf

References

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