# CVE-2026-8598: ZKTeco CCTV Cameras auth bypass via undocumented port

Source: https://junglewise.ai/threats/cve-2026-8598-zkteco-cctv-cameras-auth-bypass-via-undocumented-port  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-20. Updated: 2026-05-20  
License: CC BY 4.0 with a link back

CVE-2026-8598 · Severity: critical · CVSS 9.1 · Published 2026-05-20

ZKTeco CCTV cameras, used for video surveillance and security monitoring, contain a security flaw that allows unauthorized access to sensitive device information. An undocumented communication port is left open, which can be accessed over the network without a password. An attacker could use this to steal camera account credentials and view configuration details, potentially compromising the entire security camera system and its video feeds.

Vendors: [Zkteco](https://junglewise.ai/threats/vendors/zkteco).

## Quick answers

**Is CVE-2026-8598 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8598 being exploited in the wild.

**How severe is CVE-2026-8598?** Critical severity, with a CVSS score of 9.1, published 20 May 2026.

**Which products and versions are affected?** Zkteco CCTV Cameras SSC335-GC2063-Face-0b77 Solution < V5.0.1.2.20260421; Zkteco SSC335-GC2063-Face-0b77 Solution < V5.0.1.2.20260421.

**Is there a fix for CVE-2026-8598?** A patch was published on 2026-04-21: Firmware version V5.0.1.2.20260421 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-8598 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-8598?** Check whether you run Zkteco CCTV Cameras SSC335-GC2063-Face-0b77 Solution or Zkteco SSC335-GC2063-Face-0b77 Solution 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

An authentication bypass vulnerability (CWE-288) exists in certain ZKTeco CCTV camera models due to an undocumented configuration export port. This port is accessible over the network and does not require any authentication to provide a full export of the device configuration. A remote, unauthenticated attacker can exploit this to retrieve critical information, including camera account credentials and details about open services. The vulnerability is confirmed in the SSC335-GC2063-Face-0b77 solution. ZKTeco has released firmware version V5.0.1.2.20260421 to remediate this issue.

## Affected products

- ZKTeco CCTV Cameras SSC335-GC2063-Face-0b77 Solution < V5.0.1.2.20260421

## Timeline

- 2026-05-19: advisory: Initial ICS Advisory (ICSA-26-139-04) published by CISA
- 2026-05-20: disclosed: CVE-2026-8598 published to the NVD
- 2026-04-21: patched: Firmware version V5.0.1.2.20260421 released to address the vulnerability

## References

- [https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-139-04.json](https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-139-04.json)
- [https://www.cisa.gov/news-events/ics-advisories/icsa-26-139-04](https://www.cisa.gov/news-events/ics-advisories/icsa-26-139-04)
- [https://www.zkteco.com/en/announcement/23](https://www.zkteco.com/en/announcement/23)