How severe is CVE-2026-27512?

CVE-2026-27512 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-27512 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27512?

CVE-2026-27512 affects Tenda F3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27512?

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

Does CVE-2026-27512 have an EU (EUVD) identifier?

Yes. CVE-2026-27512 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7566.

When was CVE-2026-27512 published?

CVE-2026-27512 was published on 2026-02-23 and last updated on 2026-06-17.

CVE-2026-27512

CVE-2026-27512 is a medium-severity vulnerability in Tenda F3 Firmware with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 5.1
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7566
Weakness: CWE-79
Affected product: Tenda F3 Firmware
Published: 2026-02-23
Last modified: 2026-06-17

Description

Shenzhen Tenda F3 Wireless Router firmware V12.01.01.55_multi contains a content-type confusion vulnerability in the administrative interface. Responses omit the X-Content-Type-Options: nosniff header and include attacker-influenced content that can be reflected into the response body. Under affected browser behaviors, MIME sniffing may cause the response to be interpreted as active HTML, enabling script execution in the context of the administrative interface.

Frequently asked questions

What is CVE-2026-27512?: Shenzhen Tenda F3 Wireless Router firmware V12.01.01.55_multi contains a content-type confusion vulnerability in the administrative interface. Responses omit the X-Content-Type-Options: nosniff header and include attacker-influenced content that can be reflected into the response body. Under affected browser behaviors, MIME sniffing may cause the response to be interpreted as active HTML, enabling script execution in the context of the administrative interface.
How severe is CVE-2026-27512?: CVE-2026-27512 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-27512 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27512?: CVE-2026-27512 affects Tenda F3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27512?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27512 have an EU (EUVD) identifier?: Yes. CVE-2026-27512 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7566.
When was CVE-2026-27512 published?: CVE-2026-27512 was published on 2026-02-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:f3_firmware:*:*:*:*:*:*:*:*

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