Quick answers
- Is CVE-2026-18848 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18848 being exploited in the wild.
- How severe is CVE-2026-18848?
- High severity, with a CVSS score of 8.3, published 19 August 2026.
- Which products and versions are affected?
- IBM Power Systems Firmware FW1120.00, FW1110.00-FW1110.30, FW1060.00-FW1060.80, FW950.00-FW950.H2.
- Is there a fix for CVE-2026-18848?
- 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-2026-18848 attacked?
- It is attacked over the network, in device firmware.
- Am I affected by CVE-2026-18848?
- Check whether you run IBM Power Systems Firmware 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
The vulnerability is a cross-site request forgery (CSRF, CWE-352) in the ASMI web interface of IBM Power Systems Firmware. An attacker can craft a web page that, when visited by an authenticated ASMI administrator, performs unauthorized administrative actions on the Flexible Service Processor (FSP) without the administrator's knowledge or consent. The attack requires user interaction (luring the admin to visit the crafted page) and network access, but no additional authentication. Successful exploitation results in unauthorized administrative access and can impact system confidentiality, integrity, and availability. Patches are available through FW1120.01, FW1110.31, FW1060.81, or FW950.H3 depending on the firmware version and system model.
Affected products
- IBM Power Systems Firmware FW1120.00, FW1110.00-FW1110.30, FW1060.00-FW1060.80, FW950.00-FW950.H2
Timeline
- 2026-08-15: disclosed: Initial publication of security bulletin