CVE-2026-67967: Buffer Overflow vulnerability in Tenda W20E V16.01.0.6(2782) allows an attacker to execute arbitrary code

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CRITICAL 9.8REMOTE

CVE-2026-67967 is a critical-severity flaw (CVSS 9.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer Overflow vulnerability in Tenda W20E V16.01.0.6(2782) allows an attacker to execute arbitrary code. This is an incomplete fix for CVE-2025-44867 and CVE-2026-36819

Why this priority

Critical severity
CISA SSVC: public proof of concept
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	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-121
Published	2026-08-17
Last modified	2026-10-23

Publisher (CNA): MITRE

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-08-17 21:16 UTCPublished CVE record published
2026-10-23 16:10 UTCUpdated Record last modified

Exact fixes by distribution

Fedora 46 · python-streamlink · FIXED · 8.6.2-1.fc46 · FEDORA-2026-a56fcfdc08 · source

sudo dnf upgrade --advisory=FEDORA-2026-a56fcfdc08

Fedora ELN · valgrind · FIXED · 3.28.0-1.eln159 · FEDORA-2026-c593ef1d15 · source

sudo dnf upgrade --advisory=FEDORA-2026-c593ef1d15

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/H0111mes/Tenda-W20E-Vulnerability-Disclosure

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-2026-67967?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-67967 being exploited?

CVE-2026-67967 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-2026-67967 affect?

CVE-2026-67967 affects affected software. Severity is critical (CVSS 9.8). Buffer Overflow vulnerability in Tenda W20E V16.01.0.6(2782) allows an attacker to execute arbitrary code. This is an incomplete fix for CVE-2025-44867 and CVE-2026-36819

How urgent is CVE-2026-67967?

Priority 58/100. Critical severity; CISA SSVC: public proof of concept; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

References

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