How severe is CVE-2026-7720?

CVE-2026-7720 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-7720 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-7720?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-7720 have an EU (EUVD) identifier?

Yes. CVE-2026-7720 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26873.

When was CVE-2026-7720 published?

CVE-2026-7720 was published on 2026-05-04 and last updated on 2026-06-17.

CVE-2026-7720

CVE-2026-7720 is a medium-severity vulnerability with a CVSS 3.x base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26873
Weakness: CWE-74
Published: 2026-05-04
Last modified: 2026-06-17

Description

A weakness has been identified in Totolink WA300 5.2cu.7112_B20190227. The impacted element is the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. This manipulation of the argument langType causes command injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.

Frequently asked questions

What is CVE-2026-7720?: A weakness has been identified in Totolink WA300 5.2cu.7112_B20190227. The impacted element is the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. This manipulation of the argument langType causes command injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.
How severe is CVE-2026-7720?: CVE-2026-7720 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-7720 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-7720?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-7720 have an EU (EUVD) identifier?: Yes. CVE-2026-7720 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26873.
When was CVE-2026-7720 published?: CVE-2026-7720 was published on 2026-05-04 and last updated on 2026-06-17.

References

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