CVE-2023-7242: Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and pr

Q: How do I fix CVE-2023-7242?

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

Q: Is CVE-2023-7242 being exploited?

CVE-2023-7242 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-2023-7242 affect?

CVE-2023-7242 affects icsnpp-ethercat. Severity is high (CVSS 8.2). Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds read during the process of analyzing a specific Ethercat packet. This could allow an attacke

Q: How urgent is CVE-2023-7242?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 8.2REMOTEUPGRADE

CVE-2023-7242 is a high-severity flaw (CVSS 8.2) 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 read during the process of analyzing a specific Ethercat packet. This could allow an attacker to crash the Zeek process and leak some information in memory.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-125
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-2023-7242?

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

Is CVE-2023-7242 being exploited?

CVE-2023-7242 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-2023-7242 affect?

CVE-2023-7242 affects icsnpp-ethercat. Severity is high (CVSS 8.2). Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds read during the process of analyzing a specific Ethercat packet. This could allow an attacke

How urgent is CVE-2023-7242?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-7244 CRITICAL 9.8 UPGRADE Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prio
CVE-2023-7243 CRITICAL 9.8 UPGRADE Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and pri

References

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