CVE-2024-45970: Multiple Buffer overflows in the MMS Client in MZ Automation LibIEC61850 before commit ac925fae8e281ac6defcd63

Q: How do I fix CVE-2024-45970?

libiec61850: upgrade to 1.6.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-45970 being exploited?

CVE-2024-45970 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-2024-45970 affect?

CVE-2024-45970 affects libiec61850. Severity is critical (CVSS 9.8). Multiple Buffer overflows in the MMS Client in MZ Automation LibIEC61850 before commit ac925fae8e281ac6defcd630e9dd756264e9c5bc allow a malicious server to cause a stack-based buffer overflow via the MMS FileDirResponse message.

Q: How urgent is CVE-2024-45970?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2024-45970 is a critical-severity flaw (CVSS 9.8) affecting libiec61850. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple Buffer overflows in the MMS Client in MZ Automation LibIEC61850 before commit ac925fae8e281ac6defcd630e9dd756264e9c5bc allow a malicious server to cause a stack-based buffer overflow via the MMS FileDirResponse message.

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	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-120
Published	2024-11-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mz-automation

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

Am I affected?

Timeline

2024-11-15 19:15 UTCPublished CVE record published
2026-06-17 07:55 UTCUpdated Record last modified

mz-automation libiec61850 UPGRADE

Affected: < 1.6.0

Fixed in: 1.6.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libiec61850 || rpm -q libiec61850 || libiec61850 --version

2. UPGRADE to 1.6.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libiec61850

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libiec61850

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-2024-45970?

libiec61850: upgrade to 1.6.0. Exact commands for each OS are on this page.

Is CVE-2024-45970 being exploited?

CVE-2024-45970 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-2024-45970 affect?

CVE-2024-45970 affects libiec61850. Severity is critical (CVSS 9.8). Multiple Buffer overflows in the MMS Client in MZ Automation LibIEC61850 before commit ac925fae8e281ac6defcd630e9dd756264e9c5bc allow a malicious server to cause a stack-based buffer overflow via the MMS FileDirResponse message.

How urgent is CVE-2024-45970?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-36702 HIGH 7.4 DOWNGRADE libiec61850 v1.5 was discovered to contain a heap overflow via the BerEncoder_encodeLength function at /asn1/b
CVE-2024-45971 CRITICAL 9.8 UPGRADE Multiple Buffer overflows in the MMS Client in MZ Automation LibIEC61850 before commit 1f52be9ddeae00e69cd43e4

References

← Back to latest CVEs