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CVE-2026-34155

| EUVD-2026-17413 HIGH
Unsigned to Signed Conversion Error (CWE-196)
2026-03-31 GitHub_M
7.2
CVSS 4.0
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CVSS VectorNVD

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

6
Analysis Updated
Apr 16, 2026 - 06:10 EUVD-patch-fix
executive_summary
Re-analysis Queued
Apr 16, 2026 - 05:29 backfill_euvd_patch
patch_released
Patch available
Apr 16, 2026 - 05:29 EUVD
1.15.2
EUVD ID Assigned
Mar 31, 2026 - 13:48 euvd
EUVD-2026-17413
Analysis Generated
Mar 31, 2026 - 13:48 vuln.today
CVE Published
Mar 31, 2026 - 13:28 nvd
HIGH 7.2

DescriptionNVD

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.

AnalysisAI

Integer overflow in RAUC versions prior to 1.15.2 allows signature bypass on 'plain' format bundles exceeding 2 GiB payload size, enabling attackers with bundle modification capability to alter unverified payload portions while retaining a valid signature. This affects embedded Linux systems relying on RAUC for secure firmware updates.

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RemediationAI

Within 24 hours: Identify all systems running RAUC and document current versions across inventory. Within 7 days: Upgrade RAUC to version 1.15.2 or later on all affected systems; prioritize production firmware update infrastructure and edge devices. …

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CVE-2026-34155 vulnerability details – vuln.today

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