CVE-2024-57479: H3C N12 V100R005 contains a buffer overflow vulnerability due to the lack of length verification in the mac ad

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CRITICAL 9.8REMOTEMITIGATE

CVE-2024-57479 is a critical-severity flaw (CVSS 9.8) affecting n12 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

H3C N12 V100R005 contains a buffer overflow vulnerability due to the lack of length verification in the mac address update function. Attackers who successfully exploit this vulnerability can cause the remote target device to crash or execute arbitrary commands by sending a POST request to /bin/webs.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

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 53%)
CISA exploited list	No
Weakness	CWE-120
Published	2025-01-14
Last modified	2026-07-05

Publisher (CNA): MITRE · Vendor: h3c

Last updated 2026-07-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-01-14 22:15 UTCPublished CVE record published
2026-07-05 01:21 UTCUpdated Record last modified

h3c n12 firmware MITIGATE

Affected: 100r005

Fixed in: no fixed release known

Safe to downgrade to: a release before 100r005

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-2024-57479?

n12 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-57479 being exploited?

CVE-2024-57479 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-2024-57479 affect?

CVE-2024-57479 affects n12 firmware. Severity is critical (CVSS 9.8). H3C N12 V100R005 contains a buffer overflow vulnerability due to the lack of length verification in the mac address update function. Attackers who successfully exploit this vulnerability can cause the remote target device to crash or execut

How urgent is CVE-2024-57479?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-57482 CRITICAL 9.8 MITIGATE H3C N12 V100R005 contains a buffer overflow vulnerability due to the lack of length verification in the 5G wir
CVE-2024-57480 CRITICAL 9.8 MITIGATE H3C N12 V100R005 contains a buffer overflow vulnerability due to the lack of length verification in the AP con
CVE-2024-57473 CRITICAL 9.8 MITIGATE H3C N12 V100R005 contains a buffer overflow vulnerability due to the lack of length verification in the mac ad
CVE-2024-57471 CRITICAL 9.8 MITIGATE H3C N12 V100R005 contains a buffer overflow vulnerability due to the lack of length verification in the 2.4G w

References

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