VulnerabilityAnalyzed
CVE-2026-59641
In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation.
HIGH 8.7EPSS 0.15%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcmail-fips and bcjmail-fips 1.0.7 (1.0.X series), 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series).
- CVSS 4.0
- 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.15% probability · 4th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-345
- Affected
- bouncycastle/bc-java · bouncycastle/bcjmail-fips · bouncycastle/bcmail-fips · bouncycastle/bouncy castle for java lts
- Source
- 91579145-5d7b-4cc5-b925-a0262ff19630
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.