CVE-2026-110021
Medium
Description
PLCnext Engineer checks GSDX manifest reference digests but does not cryptographically verify the XML `SignatureValue` over canonicalized `SignedInfo`. An unauthenticated local attacker can modify signed GSDML content, update its manifest digest, retain the public certificate data, and leave an invalid nonempty `SignatureValue`. PLCnext Engineer prior to 2026.6 reports the package as `Valid` and selects the modified device description for import under the default policy.
SeverityMedium
CVSS6.2
Exploit probability—
ProductPLCnext Engineer
PublishedNov 4, 2026
First seenNov 4, 2026
Weakness typeCWE-347CWE-347
How to fix
Update
- PLCnext Engineer2026.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| PLCnext Engineer | No range specified | 2026.6 |
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