Secuno
ENNL
Book demo

CVE-2026-91843

9.8 CRITICAL
  1. Published16 Sept 2026

Description

A stack overflow during the unauthenticated login process may allow an attacker to run arbitrary code remotely with root privileges.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-768618.8
Netcore NR255-V version 1.5.130703 contains a stack-based buffer overflow in…
CVE-2026-768608.8
Netcore NR255-V version 1.5.130703 contains a stack-based buffer overflow in…
CVE-2026-910039.1
A flaw has been found in D-Link DI-8300 16.07. The affected element is the function…
CVE-2026-910019.9
A security flaw has been discovered in D-Link DI-8400 16.07. This affects the function…
CVE-2026-906939.9
A flaw has been found in D-Link DIR-878 120B05. This impacts the function…
CVE-2026-906929.9
A vulnerability was detected in D-Link DIR-878 120B05. This affects the function…

Frequently asked

Is CVE-2026-91843 being actively exploited?

CVE-2026-91843 is not in the CISA KEV catalog.

How severe is CVE-2026-91843?

CVE-2026-91843 has a CVSS 3.1 base score of 9.8, rated critical.

How do I fix CVE-2026-91843?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-91843 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.