How severe is CVE-2026-7856?

CVE-2026-7856 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-7856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-7856?

CVE-2026-7856 affects Dlink Di-8100 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-7856?

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-2026-7856 have an EU (EUVD) identifier?

Yes. CVE-2026-7856 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27486.

When was CVE-2026-7856 published?

CVE-2026-7856 was published on 2026-05-05 and last updated on 2026-06-17.

CVE-2026-7856

CVE-2026-7856 is a high-severity vulnerability in Dlink Di-8100 Firmware with a CVSS 3.x base score of 7.2. 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 7.2)
CVSS v2: 8.3
CVSS v4: 7.3
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-27486
Weakness: CWE-119
Affected product: Dlink Di-8100 Firmware
Published: 2026-05-05
Last modified: 2026-06-17

Description

A flaw has been found in D-Link DI-8100 16.07.26A1. This affects an unknown part of the file /url_member.asp of the component Web Management Interface. Executing a manipulation of the argument Name can lead to buffer overflow. The attack can be launched remotely. The exploit has been published and may be used.

Frequently asked questions

What is CVE-2026-7856?: A flaw has been found in D-Link DI-8100 16.07.26A1. This affects an unknown part of the file /url_member.asp of the component Web Management Interface. Executing a manipulation of the argument Name can lead to buffer overflow. The attack can be launched remotely. The exploit has been published and may be used.
How severe is CVE-2026-7856?: CVE-2026-7856 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-7856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-7856?: CVE-2026-7856 affects Dlink Di-8100 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-7856?: 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-2026-7856 have an EU (EUVD) identifier?: Yes. CVE-2026-7856 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27486.
When was CVE-2026-7856 published?: CVE-2026-7856 was published on 2026-05-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:di-8100_firmware:16.07.26a1:*:*:*:*:*:*:*

More vulnerabilities in Dlink Di-8100 Firmware

CVE-2026-7854 — Critical (CVSS 9.8): A security vulnerability has been detected in D-Link DI-8100 16.07.26A1. Affected by this vulnerability is the function…
CVE-2026-7853 — Critical (CVSS 9.8): A weakness has been identified in D-Link DI-8100 16.07.26A1. Affected is the function sprintf of the file…
CVE-2026-7248 — Critical (CVSS 9.8): A vulnerability was found in D-Link DI-8100 16.07.26A1. This affects the function tgfile_htm of the file tgfile.htm of…
CVE-2025-44083 — Critical (CVSS 9.8): An issue in D-Link DI-8100 16.07.26A1 allows a remote attacker to bypass administrator login authentication
CVE-2026-7855 — High (CVSS 8.8): A vulnerability was detected in D-Link DI-8100 16.07.26A1. Affected by this issue is the function tggl_asp of the file…
CVE-2025-7911 — High (CVSS 8.8): A vulnerability classified as critical was found in D-Link DI-8100 1.0. This vulnerability affects the function sprintf…

All CVEs affecting Dlink Di-8100 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 →