Is CVE-2026-12846 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-12846 being exploited in the wild.

How severe is CVE-2026-12846?

Critical severity, with a CVSS score of 10, published 24 June 2026.

Is there a fix for CVE-2026-12846?

A patch was published on 2026-04-28: Vendor released firmware version 2.12 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-12846 attacked?

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

Am I affected by CVE-2026-12846?

Check whether you run Geovision GV-I/O Box 4E 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-2026-12846: GeoVision GV-I/O Box 4E stack overflow in DVRSearch net_mask field

CVE-2026-12846 · Severity: critical · CVSS 10 · Published 2026-06-24

The GeoVision GV-I/O Box 4E, an industrial device used to control physical inputs and relays over a network, contains a critical security flaw in its DVRSearch service. An attacker can send a specially crafted network message to the device to take complete control of it. This could allow an unauthorized user to manipulate physical equipment connected to the box, disrupt operations, or use the device as a foothold to attack other parts of the corporate network.

Technologies: Geovision GV-I/O Box 4E. Vendors: Geovision.

Quick answers

Is CVE-2026-12846 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-12846 being exploited in the wild.
How severe is CVE-2026-12846?: Critical severity, with a CVSS score of 10, published 24 June 2026.
Which products and versions are affected?: Geovision GV-I/O Box 4E 2.09.
Is there a fix for CVE-2026-12846?: A patch was published on 2026-04-28: Vendor released firmware version 2.12 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-12846 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-12846?: Check whether you run Geovision GV-I/O Box 4E 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

A stack-based buffer overflow exists in the DVRSearch service of GeoVision GV-I/O Box 4E firmware version 2.09. The service listens for UDP messages on port 10001. The vulnerability occurs in the CMD_IP_SET functionality where the 'net_mask' field from a received network configuration is copied into a local stack buffer using memcpy() without adequate bounds checking. Specifically, the length is determined by strlen() of the attacker-controlled input and then copied to a fixed offset in 'reply_buf'. An unauthenticated remote attacker can exploit this to overwrite the stack, including the return address, leading to arbitrary code execution with root privileges. A patch was released in firmware version 2.12.

Affected products

GeoVision Inc. GV-I/O Box 4E 2.09

Timeline

2026-04-21: disclosed: Initial vendor contact and disclosure by Cisco Talos
2026-04-28: patched: Vendor released firmware version 2.12
2026-06-24: advisory: CVE published to NVD

References

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