MEDIUM

CVE-2024-30171

CVSS v3

5.9

MEDIUM

EPSS Score

0.9 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

Get an alert for each new CVE published for bc-java.

Set up CVE WatchFree account · no credit card

Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

BouncyCastleNuGetall versions · no fixed version listed
BouncyCastle.CryptographyNuGetall versions · fixed in 2.3.1
org.bouncycastle:bctls-fipsMavenall versions · fixed in 1.0.19
org.bouncycastle:bctls-jdk14Mavenall versions · fixed in 1.78and 6 other packages

Vendor advisories

CVE-2024-30171 Red Hat Product Security293 products fixed · 5 known affected
bc-java: BouncyCastle vulnerable to a timing variant of Bleichenbacher (Marvin Attack)
org.bouncycastle-bcprov-jdk18on as a component of Cryostat 2 · org.bouncycastle-bcprov-jdk18on as a component of Red Hat build of Apache Camel 4 for Quarkus 3 · org.bouncycastle-bcprov-jdk18on as a component of Red Hat build of Apache Camel for Spring Boot 3
ICSA-26-071-03 CISA1 known affected
Siemens SIDIS Prime
SIDIS Prime
SSA-485750 Siemens ProductCERT1 known affected
SSA-485750: Multiple Vulnerabilities in SIDIS Prime Before V4.0.800
SIDIS Prime
RHSA-2024:5479 Red Hat Product Security7 products fixed
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.0.3 Security update
RHSA-2024:5481 Red Hat Product Security241 products fixed
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.0.3 Security update
RHSA-2024:5482 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.0.3 Security update

9 more advisories

Full record on NVD

Description

An issue was discovered in Bouncy Castle Java TLS API and JSSE Provider before 1.78. Timing-based leakage may occur in RSA based handshakes because of exception processing.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2024-05-14
Last Modified: 2026-04-15

Frequently asked questions

What is CVE-2024-30171?

An issue was discovered in Bouncy Castle Java TLS API and JSSE Provider before 1.78. Timing-based leakage may occur in RSA based handshakes because of exception processing.

Is CVE-2024-30171 actively exploited?

Active exploitation of CVE-2024-30171 has not been confirmed. Its EPSS score was 0.9% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-30171?

CVE-2024-30171 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Running bc-java? Hear about its next vulnerability

CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

Already have an account? Open CVE WatchNo credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? CVE Watch alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database