Is CVE-2025-66177 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-66177 being exploited in the wild.

How severe is CVE-2025-66177?

High severity, with a CVSS score of 8.8, published 13 January 2026.

Which products and versions are affected?

Hikvision CVR Build date before 250807; Hikvision DVR Build date before 250807; Hikvision IPC Build date before 250807; Hikvision NVR Build date before 250807.

Is there a fix for CVE-2025-66177?

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-2025-66177 attacked?

It is attacked from the adjacent network, in a network appliance.

Am I affected by CVE-2025-66177?

Check whether you run Hikvision CVR, Hikvision DVR, Hikvision IPC or one of the others listed 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-2025-66177: Hikvision NVR/DVR/IPC buffer overflow in Search and Discovery feature

CVE-2025-66177 · Severity: high · CVSS 8.8 · Published 2026-01-13

A security vulnerability exists in the device discovery feature of various Hikvision video recording and camera products. An attacker on the same local network can send malicious data packets to cause the device to crash or malfunction. This could lead to a loss of video surveillance capabilities and potential unauthorized access to the device.

Vendors: Hikvision.

Quick answers

Is CVE-2025-66177 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-66177 being exploited in the wild.
How severe is CVE-2025-66177?: High severity, with a CVSS score of 8.8, published 13 January 2026.
Which products and versions are affected?: Hikvision CVR Build date before 250807; Hikvision DVR Build date before 250807; Hikvision IPC Build date before 250807; Hikvision NVR Build date before 250807.
Is there a fix for CVE-2025-66177?: 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-2025-66177 attacked?: It is attacked from the adjacent network, in a network appliance.
Am I affected by CVE-2025-66177?: Check whether you run Hikvision CVR, Hikvision DVR, Hikvision IPC or one of the others listed 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 (CWE-121) exists in the Search and Discovery feature of multiple Hikvision product lines, including NVR, DVR, CVR, and IPC models. The vulnerability is triggered when the device processes specially crafted network packets sent over the local area network (LAN). An unauthenticated attacker with adjacent network access can exploit this flaw to cause a denial-of-service (malfunction) or potentially achieve remote code execution. Hikvision has released firmware updates to address this issue; affected devices are those with build dates prior to August 7, 2025 (250807).

Affected products

Hikvision NVR/DVR/CVR/IPC models Build date before 250807

Timeline

2026-01-12: disclosed
2026-01-13: advisory

References

https://www.hikvision.com/en/support/cybersecurity/security-advisory/buffer-overflow-vulnerabilities-in-some-hikvision-products/

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