Is CVE-2026-121382 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-121382 being exploited in the wild.

How severe is CVE-2026-121382?

High severity, with a CVSS score of 7.5, published 3 November 2026.

Which products and versions are affected?

Netcore NBR100V2 1.3.240614.030928.

Is there a fix for CVE-2026-121382?

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-2026-121382 attacked?

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

Am I affected by CVE-2026-121382?

Check whether you run Netcore NBR100V2 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-2026-121382: Netcore NBR100V2 integer overflow in AES decryption

CVE-2026-121382 · Severity: high · CVSS 7.5 · Published 2026-11-03

Netcore NBR100V2 is a network device used to manage and route network traffic. An integer overflow vulnerability in the AES decryption function allows a remote attacker to cause the device to malfunction or execute arbitrary code without authentication. The exploit has been publicly disclosed and the vendor has not provided a patch.

Vendors: Netcore.

Quick answers

Is CVE-2026-121382 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-121382 being exploited in the wild.
How severe is CVE-2026-121382?: High severity, with a CVSS score of 7.5, published 3 November 2026.
Which products and versions are affected?: Netcore NBR100V2 1.3.240614.030928.
Is there a fix for CVE-2026-121382?: 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-2026-121382 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-121382?: Check whether you run Netcore NBR100V2 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 is an integer overflow in the msg_aes_dec function within /usr/bin/auto_ac in Netcore NBR100V2. This flaw allows remote exploitation without authentication via network access. Successful exploitation can lead to code execution or denial of service on the affected device.

Affected products

Netcore NBR100V2 1.3.240614.030928

Timeline

2026-11-03: disclosed
other: Vendor contacted but did not respond

References

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