How severe is CVE-2024-3676?

CVE-2024-3676 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2024-3676 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-3676?

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

Does CVE-2024-3676 have an EU (EUVD) identifier?

Yes. CVE-2024-3676 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32251.

When was CVE-2024-3676 published?

CVE-2024-3676 was published on 2024-05-14 and last updated on 2026-06-17.

CVE-2024-3676

CVE-2024-3676 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-32251
Weakness: CWE-20
Published: 2024-05-14
Last modified: 2026-06-17

Description

The Proofpoint Encryption endpoint of Proofpoint Enterprise Protection contains an Improper Input Validation vulnerability that allows an unauthenticated remote attacker with a specially crafted HTTP request to create additional Encryption user accounts under the attacker's control. These accounts are able to send spoofed email to any users within the domains configured by the Administrator.

Frequently asked questions

What is CVE-2024-3676?: The Proofpoint Encryption endpoint of Proofpoint Enterprise Protection contains an Improper Input Validation vulnerability that allows an unauthenticated remote attacker with a specially crafted HTTP request to create additional Encryption user accounts under the attacker's control. These accounts are able to send spoofed email to any users within the domains configured by the Administrator.
How severe is CVE-2024-3676?: CVE-2024-3676 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2024-3676 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-3676?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-3676 have an EU (EUVD) identifier?: Yes. CVE-2024-3676 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32251.
When was CVE-2024-3676 published?: CVE-2024-3676 was published on 2024-05-14 and last updated on 2026-06-17.

References

https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2024-0002

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