CVE-2020-23160: Remote code execution in Pyrescom Termod4 time management devices before 10.04k allows authenticated remote at

Q: How do I fix CVE-2020-23160?

termod4 firmware: upgrade to 10.04k. Exact commands for each OS are on this page.

Q: Is CVE-2020-23160 being exploited?

CVE-2020-23160 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-2020-23160 affect?

CVE-2020-23160 affects termod4 firmware. Severity is high (CVSS 8.8). Remote code execution in Pyrescom Termod4 time management devices before 10.04k allows authenticated remote attackers to arbitrary commands as root on the devices.

Q: How urgent is CVE-2020-23160?

Priority 59/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2020-23160 is a high-severity flaw (CVSS 8.8) affecting termod4 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Remote code execution in Pyrescom Termod4 time management devices before 10.04k allows authenticated remote attackers to arbitrary commands as root on the devices.

Why this priority

High severity
EPSS top 6%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	7.0% (top 6%)
CISA exploited list	No
Published	2021-01-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pyres

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

Am I affected?

Timeline

2021-01-26 18:15 UTCPublished CVE record published
2026-06-17 03:04 UTCUpdated Record last modified

pyres termod4 firmware UPGRADE

Affected: < 10.04k

Fixed in: 10.04k

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2020-23160?

termod4 firmware: upgrade to 10.04k. Exact commands for each OS are on this page.

Is CVE-2020-23160 being exploited?

CVE-2020-23160 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-2020-23160 affect?

CVE-2020-23160 affects termod4 firmware. Severity is high (CVSS 8.8). Remote code execution in Pyrescom Termod4 time management devices before 10.04k allows authenticated remote attackers to arbitrary commands as root on the devices.

How urgent is CVE-2020-23160?

Priority 59/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2020-23162 HIGH 7.5 UPGRADE Sensitive information disclosure and weak encryption in Pyrescom Termod4 time management devices before 10.04k
CVE-2020-23161 MEDIUM 6.5 UPGRADE Local file inclusion in Pyrescom Termod4 time management devices before 10.04k allows authenticated remote att

References

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