How severe is CVE-2026-5613?

CVE-2026-5613 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-2026-5613 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5613?

CVE-2026-5613 affects Belkin F9k1015 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5613?

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-2026-5613 have an EU (EUVD) identifier?

Yes. CVE-2026-5613 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19154.

When was CVE-2026-5613 published?

CVE-2026-5613 was published on 2026-04-06 and last updated on 2026-06-17.

CVE-2026-5613

CVE-2026-5613 is a high-severity vulnerability in Belkin F9k1015 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% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19154
Weakness: CWE-119
Affected product: Belkin F9k1015 Firmware
Published: 2026-04-06
Last modified: 2026-06-17

Description

A vulnerability was identified in Belkin F9K1015 1.00.10. This issue affects the function formReboot of the file /goform/formReboot. The manipulation of the argument webpage leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-5613?: A vulnerability was identified in Belkin F9K1015 1.00.10. This issue affects the function formReboot of the file /goform/formReboot. The manipulation of the argument webpage leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-5613?: CVE-2026-5613 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-2026-5613 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5613?: CVE-2026-5613 affects Belkin F9k1015 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5613?: 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-2026-5613 have an EU (EUVD) identifier?: Yes. CVE-2026-5613 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19154.
When was CVE-2026-5613 published?: CVE-2026-5613 was published on 2026-04-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:belkin:f9k1015_firmware:1.00.10:*:*:*:*:*:*:*

More vulnerabilities in Belkin F9k1015 Firmware

CVE-2026-5629 — High (CVSS 8.8): A vulnerability was detected in Belkin F9K1015 1.00.10. The affected element is the function formSetFirewall of the…
CVE-2026-5628 — High (CVSS 8.8): A security vulnerability has been detected in Belkin F9K1015 1.00.10. Impacted is the function formSetSystemSettings of…
CVE-2026-5614 — High (CVSS 8.8): A security flaw has been discovered in Belkin F9K1015 1.00.10. Impacted is the function formSetPassword of the file…
CVE-2026-5612 — High (CVSS 8.8): A vulnerability was determined in Belkin F9K1015 1.00.10. This vulnerability affects the function formWlEncrypt of the…
CVE-2026-5611 — High (CVSS 8.8): A vulnerability was found in Belkin F9K1015 1.00.10. This affects the function formCrossBandSwitch of the file…
CVE-2026-5610 — High (CVSS 8.8): A vulnerability has been found in Belkin F9K1015 1.00.10. Affected by this issue is the function formWISP5G of the file…

All CVEs affecting Belkin F9k1015 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 →