CVE-2026-114383: A weakness has been identified in TOTOLINK EX200 5.2.3c.7200

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CRITICAL 10.0REMOTE

CVE-2026-114383 is a critical-severity flaw (CVSS 10.0) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A weakness has been identified in TOTOLINK EX200 5.2.3c.7200. This impacts the function setWiFiAclAddConfig of the file /cgi-bin/cstecgi.cgi of the component wireless.so. This manipulation of the argument macAddress causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 49%)
CISA exploited list	No
Weakness	CWE-119, CWE-121
Published	2026-10-21
Last modified	2026-10-22

Publisher (CNA): VulDB

Last updated 2026-10-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-10-21 22:16 UTCPublished CVE record published
2026-10-22 15:15 UTCUpdated Record last modified

Exact fixes by distribution

Fedora 46 · mac · FIXED · 13.43-1.fc46 · FEDORA-2026-8fac5b22cf · source

sudo dnf upgrade --advisory=FEDORA-2026-8fac5b22cf

Fedora ELN · libdnf · FIXED · 0.76.0-2.eln159 · FEDORA-2026-dbd263e9d4 · source

sudo dnf upgrade --advisory=FEDORA-2026-dbd263e9d4

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-2026-114383?

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

Is CVE-2026-114383 being exploited?

CVE-2026-114383 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-2026-114383 affect?

CVE-2026-114383 affects affected software. Severity is critical (CVSS 10.0). A weakness has been identified in TOTOLINK EX200 5.2.3c.7200. This impacts the function setWiFiAclAddConfig of the file /cgi-bin/cstecgi.cgi of the component wireless.so. This manipulation of the argument macAddress causes stack-based buffe

How urgent is CVE-2026-114383?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

References

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