SWUpdate through 2026.05.1 CMS Signature Verification Bypass via Embedded Intermediates
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| sbabic | swupdate | unaffected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Swupdate | Swupdate |
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| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4864-1 | swupdate security update |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.207% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | SWUpdate through 2026.05.1 contains an improper certificate validation vulnerability in crypto/swupdate_cms_verify_openssl.c that trusts untrusted X.509 certificates embedded in CMS SignedData for chain building. Attackers holding a signing key from a sibling intermediate under the same root can embed that intermediate in the signature to install malicious updates. | |
| Title | SWUpdate through 2026.05.1 CMS Signature Verification Bypass via Embedded Intermediates | |
| First Time appeared |
Swupdate
Swupdate swupdate |
|
| Weaknesses | CWE-295 | |
| CPEs | cpe:2.3:a:swupdate:swupdate:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Swupdate
Swupdate swupdate |
|
| References |
|
|
| Metrics |
cvssV3_1
|