How severe is CVE-2026-26213?

CVE-2026-26213 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-26213 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26213?

CVE-2026-26213 affects Thingino Thingino Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26213?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-26213 have an EU (EUVD) identifier?

Yes. CVE-2026-26213 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16293.

When was CVE-2026-26213 published?

CVE-2026-26213 was published on 2026-03-26 and last updated on 2026-06-17.

CVE-2026-26213

CVE-2026-26213 is a critical-severity vulnerability in Thingino Thingino Firmware with a CVSS 3.x base score of 9.8. 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 8.7
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16293
Weakness: CWE-78
Affected product: Thingino Thingino Firmware
Published: 2026-03-26
Last modified: 2026-06-17

Description

thingino-firmware versions up to the firmware-2026-03-16 release contains an unauthenticated os command injection vulnerability in the WiFi captive portal CGI script that allows remote attackers to execute arbitrary commands as root by injecting malicious code through unsanitized HTTP parameter names. Attackers can exploit the eval function in parse_query() and parse_post() functions to achieve remote code execution and perform privileged configuration changes including root password reset and SSH authorized_keys modification, resulting in full persistent device compromise.

Frequently asked questions

What is CVE-2026-26213?: thingino-firmware versions up to the firmware-2026-03-16 release contains an unauthenticated os command injection vulnerability in the WiFi captive portal CGI script that allows remote attackers to execute arbitrary commands as root by injecting malicious code through unsanitized HTTP parameter names. Attackers can exploit the eval function in parse_query() and parse_post() functions to achieve remote code execution and perform privileged configuration changes including root password reset and SSH authorized_keys modification, resulting in full persistent device compromise.
How severe is CVE-2026-26213?: CVE-2026-26213 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-26213 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26213?: CVE-2026-26213 affects Thingino Thingino Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26213?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-26213 have an EU (EUVD) identifier?: Yes. CVE-2026-26213 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16293.
When was CVE-2026-26213 published?: CVE-2026-26213 was published on 2026-03-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:thingino:thingino_firmware:*:*:*:*:*:*:*:*

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