How severe is CVE-2026-6122?

CVE-2026-6122 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-6122 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6122?

CVE-2026-6122 affects Tenda F451 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-6122?

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

Does CVE-2026-6122 have an EU (EUVD) identifier?

Yes. CVE-2026-6122 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21722.

When was CVE-2026-6122 published?

CVE-2026-6122 was published on 2026-04-12 and last updated on 2026-06-17.

CVE-2026-6122

CVE-2026-6122 is a high-severity vulnerability in Tenda F451 Firmware with a CVSS 3.x base score of 8.8. 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-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21722
Weakness: CWE-119
Affected product: Tenda F451 Firmware
Published: 2026-04-12
Last modified: 2026-06-17

Description

A vulnerability has been found in Tenda F451 1.0.0.7. Affected by this issue is the function frmL7ProtForm of the file /goform/L7Prot of the component httpd. Such manipulation of the argument page leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2026-6122?: A vulnerability has been found in Tenda F451 1.0.0.7. Affected by this issue is the function frmL7ProtForm of the file /goform/L7Prot of the component httpd. Such manipulation of the argument page leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2026-6122?: CVE-2026-6122 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-6122 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6122?: CVE-2026-6122 affects Tenda F451 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-6122?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-6122 have an EU (EUVD) identifier?: Yes. CVE-2026-6122 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21722.
When was CVE-2026-6122 published?: CVE-2026-6122 was published on 2026-04-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:f451_firmware:1.0.0.7:*:*:*:*:*:*:*

More vulnerabilities in Tenda F451 Firmware

CVE-2026-6137 — High (CVSS 8.8): A vulnerability was detected in Tenda F451 1.0.0.7_cn_svn7958. The affected element is the function fromAdvSetWan of…
CVE-2026-6136 — High (CVSS 8.8): A security vulnerability has been detected in Tenda F451 1.0.0.7_cn_svn7958. Impacted is the function frmL7ImForm of…
CVE-2026-6135 — High (CVSS 8.8): A weakness has been identified in Tenda F451 1.0.0.7_cn_svn7958. This issue affects the function fromSetIpBind of the…
CVE-2026-6134 — High (CVSS 8.8): A security flaw has been discovered in Tenda F451 1.0.0.7_cn_svn7958. This vulnerability affects the function…
CVE-2026-6133 — High (CVSS 8.8): A vulnerability was identified in Tenda F451 1.0.0.7_cn_svn7958. This affects the function fromSafeUrlFilter of the…
CVE-2026-6124 — High (CVSS 8.8): A vulnerability was determined in Tenda F451 1.0.0.7. This vulnerability affects the function fromSafeMacFilter of the…

All CVEs affecting Tenda F451 Firmware →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →