Is CVE-2026-96891 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-96891 being exploited in the wild.

How severe is CVE-2026-96891?

Critical severity, with a CVSS score of 9.8, published 24 September 2026.

Is there a fix for CVE-2026-96891?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-96891 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-96891?

Check whether you run D-Link DIR-825 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-96891: D-Link DIR-825 out-of-bounds write in L2TP hostname parsing

CVE-2026-96891 · Severity: critical · CVSS 9.8 · Published 2026-09-24

The D-Link DIR-825 router contains a vulnerability in its L2TP (Layer 2 Tunneling Protocol) implementation that allows remote attackers to write data beyond allocated memory boundaries. An attacker can exploit this by sending specially crafted L2TP packets with a malicious hostname parameter, potentially leading to code execution and complete compromise of the router.

Vendors: D-Link.

Quick answers

Is CVE-2026-96891 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-96891 being exploited in the wild.
How severe is CVE-2026-96891?: Critical severity, with a CVSS score of 9.8, published 24 September 2026.
Which products and versions are affected?: D-Link DIR-825 3.00b32.
Is there a fix for CVE-2026-96891?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-96891 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-96891?: Check whether you run D-Link DIR-825 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in the tunnel_set_params function within tunnel.c of the rp-l2tp component, where insufficient bounds checking on the peer_hostname argument enables out-of-bounds write. The flaw is remotely exploitable without authentication. Successful exploitation could allow arbitrary code execution with router-level privileges.

Affected products

D-Link DIR-825 3.00b32

Timeline

2026-09-24: disclosed

References

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