Description
A critical Remote Code Execution (RCE) vulnerability exists in Disig Web Signer versions 2.0.3 through 2.5.3.
References6
- download.disigcdn.sk/cdn/products/websigner2/changelog.en.txt
- download.disigcdn.sk/cdn/products/websigner2/changelog.sk.txt
- qesportal.sk/Portal/en/Info/News#websigner255
- qesportal.sk/Portal/sk/Info/News#websigner255
- www.disig.sk/en/news/important-update-of-the-web-signer-applica…
- www.disig.sk/sk/aktuality/dolezita-aktualizacia-aplikacie-web-s…
Metrics
- CVSS 4.0
-
9.4
CRITICAL
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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 - EPSS — exploit probability
- 1% percentile: 54 · as of 15 November 2026
- CWE
- CWE-94
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.