How severe is CVE-2024-42638?

CVE-2024-42638 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-42638 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-42638?

CVE-2024-42638 affects H3c Magic B1st Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-42638?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-42638 have an EU (EUVD) identifier?

Yes. CVE-2024-42638 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39734.

When was CVE-2024-42638 published?

CVE-2024-42638 was published on 2024-08-16 and last updated on 2026-06-17.

CVE-2024-42638

CVE-2024-42638 is a critical-severity vulnerability in H3c Magic B1st Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-39734
Weakness: CWE-798
Affected product: H3c Magic B1st Firmware
Published: 2024-08-16
Last modified: 2026-06-17

Description

H3C Magic B1ST v100R012 was discovered to contain a hardcoded password vulnerability in /etc/shadow, which allows attackers to log in as root.

Frequently asked questions

What is CVE-2024-42638?: H3C Magic B1ST v100R012 was discovered to contain a hardcoded password vulnerability in /etc/shadow, which allows attackers to log in as root.
How severe is CVE-2024-42638?: CVE-2024-42638 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-42638 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-42638?: CVE-2024-42638 affects H3c Magic B1st Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-42638?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-42638 have an EU (EUVD) identifier?: Yes. CVE-2024-42638 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39734.
When was CVE-2024-42638 published?: CVE-2024-42638 was published on 2024-08-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:h3c:magic_b1st_firmware:100r012:*:*:*:*:*:*:*

More vulnerabilities in H3c Magic B1st Firmware

CVE-2023-34937 — High (CVSS 7.5): A stack overflow in the UpdateSnat function of H3C Magic B1STV100R012 allows attackers to cause a Denial of Service…
CVE-2023-34936 — High (CVSS 7.5): A stack overflow in the UpdateMacClone function of H3C Magic B1STV100R012 allows attackers to cause a Denial of Service…
CVE-2023-34935 — High (CVSS 7.5): A stack overflow in the AddWlanMacList function of H3C Magic B1STV100R012 allows attackers to cause a Denial of Service…
CVE-2023-34934 — High (CVSS 7.5): A stack overflow in the Edit_BasicSSID_5G function of H3C Magic B1STV100R012 allows attackers to cause a Denial of…
CVE-2023-34933 — High (CVSS 7.5): A stack overflow in the UpdateWanParams function of H3C Magic B1STV100R012 allows attackers to cause a Denial of…
CVE-2023-34932 — High (CVSS 7.5): A stack overflow in the UpdateWanMode function of H3C Magic B1STV100R012 allows attackers to cause a Denial of Service…

All CVEs affecting H3c Magic B1st Firmware →

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