Which products and versions are affected by CVE-2026-9533?

Affected: CA750-PoE (Totolink). The full list is in the CVE brief.

Is CVE-2026-9533 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2026-9533 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2026-9533?

Public exploit code is available.

Is there a fix for CVE-2026-9533?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2026-9533 be patched?

Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

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Vulnerability Intelligence

CVE-2026-9533

LowPublic exploit

A vulnerability was detected in Totolink CA750-PoE 6.2c.510.

Published May 26, 2026 · Updated Jul 23, 2026 · Also known as EUVD-2026-31791, GHSA-mh4r-64r2-gj28

Key Facts

Routine patching

CVE-2026-9533 is a low-severity vulnerability (CVSS 2.1 v4) affecting CA750-PoE (Totolink).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 1.8% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

CVSS v4

2.1

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS (30-day exploit likelihood)

1.8%

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2026-9533 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

A vulnerability was detected in Totolink CA750-PoE 6.2c.510. The impacted element is the function recvUpgradeNewFw of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. Performing a manipulation of the argument fwUrl/magicid results in os command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
CA750-PoETotolink	See advisory	n/a

Timeline

Publicly disclosed
May 26, 2026
Last updated
Jul 23, 2026

Weakness Type

CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

FAQ

Common Questions.

A vulnerability was detected in Totolink CA750-PoE 6.2c.510.
Affected: CA750-PoE (Totolink). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

Is CVE-2026-9533 Running On Your Attack Surface?

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