# CVE-2026-27553: Pepperl+Fuchs ICE2/ICE3 path traversal allows password hash disclosure

Source: https://junglewise.ai/threats/cve-2026-27553-pepperl-fuchs-ice2-ice3-path-traversal-allows-password-hash  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-16. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-27553 · Severity: medium · CVSS 6.5 · Published 2026-09-16

Industrial ethernet coupling controllers (ICE2 and ICE3 series) used in manufacturing and automation systems contain a path traversal vulnerability in their web diagnostics interface. An authenticated attacker can manipulate file paths to read sensitive password hashes and other credentials stored on the device, potentially leading to account compromise and unauthorized system access.

Technologies: [Pepperl+Fuchs ICE2-8IOL-G65L-V1D](https://junglewise.ai/threats/technologies/ice2-8iol-g65l-v1d), [Pepperl+Fuchs ICE2-8IOL-K45P-RJ45](https://junglewise.ai/threats/technologies/ice2-8iol-k45p-rj45), [Pepperl+Fuchs ICE2-8IOL-K45S-RJ45](https://junglewise.ai/threats/technologies/ice2-8iol-k45s-rj45), [Pepperl+Fuchs ICE2-8IOL1-G65L-V1D](https://junglewise.ai/threats/technologies/ice2-8iol1-g65l-v1d), [Pepperl+Fuchs ICE3-8IOL-G65L-V1D](https://junglewise.ai/threats/technologies/ice3-8iol-g65l-v1d), [Pepperl+Fuchs ICE3-8IOL-G65L-V1D-Y](https://junglewise.ai/threats/technologies/ice3-8iol-g65l-v1d-y), [Pepperl+Fuchs ICE3-8IOL-K45P-RJ45](https://junglewise.ai/threats/technologies/ice3-8iol-k45p-rj45), [Pepperl+Fuchs ICE3-8IOL-K45S-RJ45](https://junglewise.ai/threats/technologies/ice3-8iol-k45s-rj45), [Pepperl+Fuchs ICE3-8IOL1-G65L-V1D](https://junglewise.ai/threats/technologies/ice3-8iol1-g65l-v1d). Vendors: [Pepperl+Fuchs](https://junglewise.ai/threats/vendors/pepperl-fuchs).

## Quick answers

**Is CVE-2026-27553 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-27553 being exploited in the wild.

**How severe is CVE-2026-27553?** Medium severity, with a CVSS score of 6.5, published 16 September 2026.

**Which products and versions are affected?** Pepperl+Fuchs ICE2-8IOL-G65L-V1D <1.7.4; Pepperl+Fuchs ICE2-8IOL-K45P-RJ45 <1.7.4; Pepperl+Fuchs ICE2-8IOL-K45S-RJ45 <1.7.4; Pepperl+Fuchs ICE2-8IOL1-G65L-V1D <1.7.4; and 5 more.

**Is there a fix for CVE-2026-27553?** 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-2026-27553 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-27553?** Check whether you run Pepperl+Fuchs ICE2-8IOL-G65L-V1D, Pepperl+Fuchs ICE2-8IOL-K45P-RJ45, Pepperl+Fuchs ICE2-8IOL-K45S-RJ45 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 path traversal vulnerability exists in the /index.php/diagnostics_tab/ajax_diag_table_rows endpoint of the ICE2 and ICE3 device firmware. The vulnerability allows a low-privileged attacker with valid user credentials (via cookie) to manipulate the schema path parameter to traverse the filesystem and read arbitrary files. This enables disclosure of password hashes and other sensitive configuration files. The vulnerability requires valid authentication credentials but can be exploited with standard user-level access. Patches are available in firmware version 1.7.4 and later.

## Affected products

- Pepperl+Fuchs ICE2-8IOL-G65L-V1D <1.7.4
- Pepperl+Fuchs ICE2-8IOL-K45P-RJ45 <1.7.4
- Pepperl+Fuchs ICE2-8IOL-K45S-RJ45 <1.7.4
- Pepperl+Fuchs ICE2-8IOL1-G65L-V1D <1.7.4
- Pepperl+Fuchs ICE3-8IOL-G65L-V1D <1.7.4
- Pepperl+Fuchs ICE3-8IOL-G65L-V1D-Y <1.7.4
- Pepperl+Fuchs ICE3-8IOL-K45P-RJ45 <1.7.4
- Pepperl+Fuchs ICE3-8IOL-K45S-RJ45 <1.7.4
- Pepperl+Fuchs ICE3-8IOL1-G65L-V1D <1.7.4

## Timeline

- 2026-09-16: disclosed

## References

- [https://www.certvde.com/en/advisories/VDE-2026-014/](https://www.certvde.com/en/advisories/VDE-2026-014/)
- [https://www.certvde.com/en/advisories/VDE-2026-027/](https://www.certvde.com/en/advisories/VDE-2026-027/)

## Related threats

- [Pepperl+Fuchs ICE2/ICE3 OS command injection in IODD file upload](https://junglewise.ai/threats/cve-2026-27565-pepperl-fuchs-ice2-ice3-os-command-injection-in-iodd-file-upload)
- [Pepperl+Fuchs ICE2/ICE3 command injection in datastorage endpoint](https://junglewise.ai/threats/cve-2026-27564-pepperl-fuchs-ice2-ice3-command-injection-in-datastorage-endpoint)
- [Pepperl+Fuchs ICE2 and ICE3 command injection in datastorage endpoint](https://junglewise.ai/threats/cve-2026-27563-pepperl-fuchs-ice2-and-ice3-command-injection-in-datastorage)
- [Pepperl+Fuchs ICE2/ICE3 command injection in /api/iodd/config](https://junglewise.ai/threats/cve-2026-27562-pepperl-fuchs-ice2-ice3-command-injection-in-api-iodd-config)
- [Pepperl+Fuchs ICE2/ICE3 command injection in /api/iodd/config](https://junglewise.ai/threats/cve-2026-27561-pepperl-fuchs-ice2-ice3-command-injection-in-api-iodd-config)