Quick answers
- Is CVE-2026-82480 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-82480 being exploited in the wild.
- How severe is CVE-2026-82480?
- High severity, with a CVSS score of 7.4, published 30 August 2026.
- Which products and versions are affected?
- Nasa cFS up to 7.0.1.
- Is there a fix for CVE-2026-82480?
- 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-2026-82480 attacked?
- It is attacked over the network, in device firmware.
- Am I affected by CVE-2026-82480?
- Check whether you run Nasa cFS 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 an integer underflow in the CFE_SB_GetUserDataLength function within src/cFS/cfe/modules/sb/fsw/src/cfe_sb_util.c. An attacker can manipulate the TotalMsgSize or HdrSize arguments to trigger an underflow condition, causing incorrect user data length calculations. The flaw is remotely exploitable over the network with no authentication required. Successful exploitation could lead to denial of service, buffer overflows, or arbitrary code execution. The vendor (NASA) was contacted early but provided no response or patch at the time of disclosure.
Affected products
- NASA cFS up to 7.0.1
Timeline
- 2026-08-30: disclosed
- 2026-08-30: advisory