CVE-2020-9345: An issue was discovered in signotec signoPAD-API/Web (formerly Websocket Pad Server) before 3.1.1 on Windows

Q: How do I fix CVE-2020-9345?

signopad-api\/web: upgrade to 3.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2020-9345 being exploited?

CVE-2020-9345 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-9345 affect?

CVE-2020-9345 affects signopad-api\/web. Severity is medium (CVSS 6.5). 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.

Q: How urgent is CVE-2020-9345?

Priority 43/100. Public exploit reference

This month

MEDIUM 6.5UPGRADE

CVE-2020-9345 is a medium-severity flaw (CVSS 6.5) affecting signopad-api\/web. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-770
Published	2020-03-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: signotec

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-03-20 03:15 UTCPublished CVE record published
2026-06-17 03:27 UTCUpdated Record last modified

signotec signopad-api\/web UPGRADE

Affected: < 3.1.1

Fixed in: 3.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy signopad-apiweb || rpm -q signopad-apiweb || signopad-apiweb --version

2. UPGRADE to 3.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade signopad-apiweb

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade signopad-apiweb

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-9345?

signopad-api\/web: upgrade to 3.1.1. Exact commands for each OS are on this page.

Is CVE-2020-9345 being exploited?

CVE-2020-9345 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-9345 affect?

CVE-2020-9345 affects signopad-api\/web. Severity is medium (CVSS 6.5). 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.

How urgent is CVE-2020-9345?

Priority 43/100. Public exploit reference

Software pages

Windows vulnerabilities

Related CVEs

CVE-2020-9343 MEDIUM 6.5 UPGRADE An issue was discovered in signotec signoPAD-API/Web (formerly Websocket Pad Server) before 3.1.1 on Windows

References

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