CVE-2026-110021
Missing GSDX SignatureValue verification
CVSS Score
6.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-347 |
| Vendor | phoenix contact |
| Product | plcnext engineer |
| Published | Nov 4, 2026 |
Stay Ahead of the Next One
Get instant alerts for phoenix contact plcnext engineer
Be the first to know when new medium vulnerabilities affecting phoenix contact plcnext engineer are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
Phoenix Contact / PLCnext Engineer
0.0 < 2026.6
References
Credits
Ievgen Bondarenko