# CVE-2026-34155

## Summary

- **CVE ID:** CVE-2026-34155
- **Severity:** HIGH
- **CVSS Score:** 7.2 (CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H)
- **CWE:** CWE-196, CWE-347
- **Published:** Mar 31, 2026
- **Last Modified:** Mar 31, 2026

## Description

RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2.

## Affected Products

- rauc — rauc (< 1.15.2)

## References

- [CNA](https://github.com/rauc/rauc/security/advisories/GHSA-6hj7-q844-m2hx)
- [CNA](https://github.com/rauc/rauc/commit/4fb7c798d6ae412344fb8f8d310d773046af3441)
- [CNA](https://github.com/rauc/rauc/releases/tag/v1.15.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.14%
- **EPSS Percentile:** 3.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._