CVE-2023-7244: Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prio

Q: How do I fix CVE-2023-7244?

icsnpp-ethercat: upgrade to newer than d78dda6. Exact commands for each OS are on this page.

Q: Is CVE-2023-7244 being exploited?

CVE-2023-7244 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-2023-7244 affect?

CVE-2023-7244 affects icsnpp-ethercat. Severity is critical (CVSS 9.8). Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds write in their primary analyses function for Ethercat communication packets. This could allow

Q: How urgent is CVE-2023-7244?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-7244 is a critical-severity flaw (CVSS 9.8) affecting icsnpp-ethercat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds write in their primary analyses function for Ethercat communication packets. This could allow an attacker to cause arbitrary code execution.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-787
Published	2024-03-01
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: cisa

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

Am I affected?

Timeline

2024-03-01 21:15 UTCPublished CVE record published
2026-06-17 06:52 UTCUpdated Record last modified

cisa icsnpp-ethercat UPGRADE

Affected: <= d78dda6

Fixed in: newer than d78dda6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy icsnpp-ethercat || rpm -q icsnpp-ethercat || icsnpp-ethercat --version

2. UPGRADE to newer than d78dda6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade icsnpp-ethercat

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade icsnpp-ethercat

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-2023-7244?

icsnpp-ethercat: upgrade to newer than d78dda6. Exact commands for each OS are on this page.

Is CVE-2023-7244 being exploited?

CVE-2023-7244 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-2023-7244 affect?

CVE-2023-7244 affects icsnpp-ethercat. Severity is critical (CVSS 9.8). Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds write in their primary analyses function for Ethercat communication packets. This could allow

How urgent is CVE-2023-7244?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-7243 CRITICAL 9.8 UPGRADE Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and pri
CVE-2023-7242 HIGH 8.2 UPGRADE Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and pr

References

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