An issue was discovered in signotec signoPAD-API/Web (formerly Websocket Pad Server) before 3.1.1 on Windows.

published 2020-03-20 6y ago modified 2026-06-17 4mo ago also EUVD-2020-30166

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits: 0; none known

An issue was discovered in signotec signoPAD-API/Web (formerly Websocket Pad Server) before 3.1.1 on Windows. It is possible to perform a Denial of Service attack because the application doesn't limit the number of opened WebSocket sockets. If a victim visits an attacker-controlled website, this vulnerability can be exploited.

Patch / fix

fixed in 1

signotec signopad-api/web 3.1.1

Is CVE-2020-9345 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

syss.de https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2019-052.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

CWE-770 Allocation of Resources Without Limits or Throttling

References

syss.de /fileadmin/dokumente/Publikationen/Advisories/SYSS-2019-052.txt
exploit, third-party-advisory

Sources

CVE List CVE-2020-9345
NVD CVE-2020-9345

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.