How severe is CVE-2024-3296?

CVE-2024-3296 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-3296 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-3296?

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

Does CVE-2024-3296 have an EU (EUVD) identifier?

Yes. CVE-2024-3296 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31886.

When was CVE-2024-3296 published?

CVE-2024-3296 was published on 2024-04-04 and last updated on 2026-06-17.

CVE-2024-3296

CVE-2024-3296 is a medium-severity vulnerability with a CVSS 3.x base score of 5.9. 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-208.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-31886
Weakness: CWE-208
Published: 2024-04-04
Last modified: 2026-06-17

Description

A timing-based side-channel flaw exists in the rust-openssl package, which could be sufficient to recover a plaintext across a network in a Bleichenbacher-style attack. To achieve successful decryption, an attacker would have to be able to send a large number of trial messages for decryption. The vulnerability affects the legacy PKCS#1v1.5 RSA encryption padding mode.

Frequently asked questions

What is CVE-2024-3296?: A timing-based side-channel flaw exists in the rust-openssl package, which could be sufficient to recover a plaintext across a network in a Bleichenbacher-style attack. To achieve successful decryption, an attacker would have to be able to send a large number of trial messages for decryption. The vulnerability affects the legacy PKCS#1v1.5 RSA encryption padding mode.
How severe is CVE-2024-3296?: CVE-2024-3296 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-3296 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-3296?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-3296 have an EU (EUVD) identifier?: Yes. CVE-2024-3296 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31886.
When was CVE-2024-3296 published?: CVE-2024-3296 was published on 2024-04-04 and last updated on 2026-06-17.

References

Other CWE-208 vulnerabilities

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