How severe is CVE-2024-34020?

CVE-2024-34020 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-34020 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-34020?

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

Does CVE-2024-34020 have an EU (EUVD) identifier?

Yes. CVE-2024-34020 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-34592.

When was CVE-2024-34020 published?

CVE-2024-34020 was published on 2024-04-29 and last updated on 2026-06-17.

CVE-2024-34020

CVE-2024-34020 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-121.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-34592
Weakness: CWE-121
Published: 2024-04-29
Last modified: 2026-06-17

Description

A stack-based buffer overflow was found in the putSDN() function of mail.c in hcode through 2.1.

Frequently asked questions

What is CVE-2024-34020?: A stack-based buffer overflow was found in the putSDN() function of mail.c in hcode through 2.1.
How severe is CVE-2024-34020?: CVE-2024-34020 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-34020 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-34020?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-34020 have an EU (EUVD) identifier?: Yes. CVE-2024-34020 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-34592.
When was CVE-2024-34020 published?: CVE-2024-34020 was published on 2024-04-29 and last updated on 2026-06-17.

References

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