How severe is CVE-2023-50433?

CVE-2023-50433 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-50433 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-50433?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-50433 have an EU (EUVD) identifier?

Yes. CVE-2023-50433 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-55225.

When was CVE-2023-50433 published?

CVE-2023-50433 was published on 2024-04-29 and last updated on 2026-06-17.

CVE-2023-50433

CVE-2023-50433 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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-843.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-55225
Weakness: CWE-843
Published: 2024-04-29
Last modified: 2026-06-17

Description

marshall in dhcp_packet.c in simple-dhcp-server through ec976d2 allows remote attackers to cause a denial of service by sending a malicious DHCP packet. The crash is caused by a type confusion bug that results in a large memory allocation; when this memory allocation fails the DHCP server will crash.

Frequently asked questions

What is CVE-2023-50433?: marshall in dhcp_packet.c in simple-dhcp-server through ec976d2 allows remote attackers to cause a denial of service by sending a malicious DHCP packet. The crash is caused by a type confusion bug that results in a large memory allocation; when this memory allocation fails the DHCP server will crash.
How severe is CVE-2023-50433?: CVE-2023-50433 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-50433 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-50433?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-50433 have an EU (EUVD) identifier?: Yes. CVE-2023-50433 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-55225.
When was CVE-2023-50433 published?: CVE-2023-50433 was published on 2024-04-29 and last updated on 2026-06-17.

References

https://papers.mathyvanhoef.com/esorics2024.pdf

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