How severe is CVE-2026-4567?

CVE-2026-4567 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-2026-4567 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4567?

CVE-2026-4567 affects Tenda A15 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4567?

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-2026-4567 have an EU (EUVD) identifier?

Yes. CVE-2026-4567 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14349.

When was CVE-2026-4567 published?

CVE-2026-4567 was published on 2026-03-23 and last updated on 2026-06-17.

CVE-2026-4567

CVE-2026-4567 is a critical-severity vulnerability in Tenda A15 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-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
CVSS v4: 8.9
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14349
Weakness: CWE-119
Affected product: Tenda A15 Firmware
Published: 2026-03-23
Last modified: 2026-06-17

Description

A vulnerability has been found in Tenda A15 15.13.07.13. The impacted element is the function UploadCfg of the file /cgi-bin/UploadCfg. The manipulation of the argument File leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2026-4567?: A vulnerability has been found in Tenda A15 15.13.07.13. The impacted element is the function UploadCfg of the file /cgi-bin/UploadCfg. The manipulation of the argument File leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2026-4567?: CVE-2026-4567 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-2026-4567 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4567?: CVE-2026-4567 affects Tenda A15 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4567?: 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-2026-4567 have an EU (EUVD) identifier?: Yes. CVE-2026-4567 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14349.
When was CVE-2026-4567 published?: CVE-2026-4567 was published on 2026-03-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:a15_firmware:15.13.07.13:*:*:*:*:*:*:*

More vulnerabilities in Tenda A15 Firmware

CVE-2022-47128 — Critical (CVSS 9.8): Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey2 parameter at /goform/WifiBasicSet.
CVE-2022-47127 — Critical (CVSS 9.8): Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlPwd parameter at /goform/WifiBasicSet.
CVE-2022-47126 — Critical (CVSS 9.8): Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlEn parameter at /goform/WifiBasicSet.
CVE-2022-47125 — Critical (CVSS 9.8): Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlEn_5g parameter at /goform/WifiBasicSet.
CVE-2022-47124 — Critical (CVSS 9.8): Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey4 parameter at /goform/WifiBasicSet.
CVE-2022-47123 — Critical (CVSS 9.8): Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey3 parameter at /goform/WifiBasicSet.

All CVEs affecting Tenda A15 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 →