How severe is CVE-2024-10635?

CVE-2024-10635 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-10635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-10635?

CVE-2024-10635 primarily affects Proofpoint Enterprise Protection. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-10635?

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

Does CVE-2024-10635 have an EU (EUVD) identifier?

Yes. CVE-2024-10635 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-54529.

When was CVE-2024-10635 published?

CVE-2024-10635 was published on 2025-04-28 and last updated on 2026-06-17.

CVE-2024-10635

CVE-2024-10635 is a medium-severity vulnerability in Proofpoint Enterprise Protection with a CVSS 3.x base score of 6.1. 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-754.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-54529
Weakness: CWE-754
Affected product: Proofpoint Enterprise Protection
Published: 2025-04-28
Last modified: 2026-06-17

Description

Enterprise Protection contains an improper input validation vulnerability in attachment defense that allows an unauthenticated remote attacker to bypass attachment scanning security policy by sending a malicious S/MIME attachment with an opaque signature. When opened by a recipient in a downstream email client, the malicious attachment could cause partial loss of integrity and confidentiality to their system.

Frequently asked questions

What is CVE-2024-10635?: Enterprise Protection contains an improper input validation vulnerability in attachment defense that allows an unauthenticated remote attacker to bypass attachment scanning security policy by sending a malicious S/MIME attachment with an opaque signature. When opened by a recipient in a downstream email client, the malicious attachment could cause partial loss of integrity and confidentiality to their system.
How severe is CVE-2024-10635?: CVE-2024-10635 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-10635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-10635?: CVE-2024-10635 primarily affects Proofpoint Enterprise Protection. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-10635?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-10635 have an EU (EUVD) identifier?: Yes. CVE-2024-10635 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-54529.
When was CVE-2024-10635 published?: CVE-2024-10635 was published on 2025-04-28 and last updated on 2026-06-17.

References

https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2025-0002

Affected products (3)

cpe:2.3:a:proofpoint:enterprise_protection:8.18.6:*:*:*:-:*:*:*
cpe:2.3:a:proofpoint:enterprise_protection:8.20.6:*:*:*:-:*:*:*
cpe:2.3:a:proofpoint:enterprise_protection:8.21.0:*:*:*:-:*:*:*

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