CVE-2026-18064 PUBLISHED

An incomplete fix for CVE-2026-15352 in the NASA core Flight System (cFS) Health and Safety (HS) application leaves a separate NULL pointer dereference reachable in versions through 7.0.1. An attacker who can trigger the affected command under specific conditions could cause the HS application to crash, resulting in a denial-of-service condition and processor reset.

NASA reports that an official fix is currently under development and is expected to be included in a future software release.

As an interim mitigation, users can update their HS app from the HS repo ( https://github.com/nasa/HS ) to the latest dev branch. The fix is in the dev branch starting at commit 828855f971db4b6714367ed0a970f52dbeab2965

• Michael Holmquist of Hasp Labs reported this vulnerability to CISA. finder

• https://github.com/nasa/HS
• https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-06
• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-06.json

• CWE-476 NULL Pointer Dereference CWE