CVE-2024-31817: In TOTOLINK EX200 V4.0.3c.7646_B20201211, an attacker can obtain sensitive information without authorization t

This week

HIGH 7.5REMOTEMITIGATE

CVE-2024-31817 is a high-severity flaw (CVSS 7.5) affecting ex200 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In TOTOLINK EX200 V4.0.3c.7646_B20201211, an attacker can obtain sensitive information without authorization through the function getSysStatusCfg.

Why this priority

High severity
EPSS top 1%: very likely to be exploited
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	55.3% (top 1%)
CISA exploited list	No
Weakness	CWE-200
Published	2024-04-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: totolink

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

Am I affected?

Timeline

2024-04-08 13:15 UTCPublished CVE record published
2026-06-17 07:28 UTCUpdated Record last modified

totolink ex200 firmware MITIGATE

Affected: 4.0.3c.7646_b20201211

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.3c.7646_b20201211

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-2024-31817?

ex200 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-31817 being exploited?

CVE-2024-31817 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-2024-31817 affect?

CVE-2024-31817 affects ex200 firmware. Severity is high (CVSS 7.5). In TOTOLINK EX200 V4.0.3c.7646_B20201211, an attacker can obtain sensitive information without authorization through the function getSysStatusCfg.

How urgent is CVE-2024-31817?

Priority 61/100. High severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-7336 HIGH 8.8 MITIGATE A vulnerability classified as critical was found in TOTOLINK EX200 4.0.3c.7646_B20201211
CVE-2024-7335 HIGH 8.8 MITIGATE A vulnerability classified as critical has been found in TOTOLINK EX200 4.0.3c.7646_B20201211
CVE-2024-53333 MEDIUM 6.3 MITIGATE TOTOLINK EX200 v4.0.3c.7646_B20201211 was found to contain a command insertion vulnerability in the setUssd fu
CVE-2024-32326 MEDIUM 6.8 MITIGATE TOTOLINK EX200 V4.0.3c.7646_B20201211 contains a Cross-site scripting (XSS) vulnerability through the key para
CVE-2024-32325 LOW 2.4 MITIGATE TOTOLINK EX200 V4.0.3c.7646_B20201211 contains a Cross-site scripting (XSS) vulnerability through the ssid par

References

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