# CVE-2026-27557: Pepperl+Fuchs ICE2/ICE3 path traversal allows private key exposure

Source: https://junglewise.ai/threats/cve-2026-27557-pepperl-fuchs-ice2-ice3-path-traversal-allows-private-key  
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-2026-27557 · Severity: high · CVSS 7.5 · Published 2026-09-16

Pepperl+Fuchs ICE2 and ICE3 industrial input/output devices contain multiple critical vulnerabilities in their web management interface. An attacker without authentication can read sensitive files including SSH private keys, bypass authentication entirely, and execute arbitrary code with root privileges on affected devices. This could allow attackers to steal credentials, disable critical industrial equipment, or pivot into connected networks.

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-2026-27557 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-27557 being exploited in the wild.

**How severe is CVE-2026-27557?** High severity, with a CVSS score of 7.5, published 16 September 2026.

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

**Is there a fix for CVE-2026-27557?** 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-2026-27557 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-27557?** 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

CVE-2026-27557 is a path traversal vulnerability in the /index.php/view_uploaded_iodd_file endpoint that allows unauthenticated remote attackers to read arbitrary files from the device filesystem, including SSH private keys. The vulnerability stems from insufficient input validation on file path parameters. An attacker can leverage directory traversal sequences (e.g., ../) to navigate outside intended directories and access sensitive configuration files and cryptographic material. No authentication is required to exploit this flaw, making it immediately exploitable by any network-adjacent attacker. Patches are available in firmware version 1.7.4 and later.

## Affected products

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

## Timeline

- 2026-09-16: disclosed: Published by VDE-2026-014

## 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)