---
cve: "CVE-2026-59641"
severity: "HIGH"
cvss: 8.7
epss: "17%"
vendor: "Legion of the Bouncy Castle Inc."
kev: false
exploited: false
published: "2026-08-03 01:16:44"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T22:56:45+02:00"
---

# CVE-2026-59641

> 8.7 HIGH · 🧪 PoC

## Beschreibung

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-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/U:Amber
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 57fbd3c501f7a369f64eda311d6a709fc0bcae84 (Commit)
- 2f81b22d559b3a1b026388e1ca78dd547384def8 (Commit)

## Referenzen

- <https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059641>
- <https://github.com/bcgit/bc-java/commit/2f81b22d559b3a1b026388e1ca78dd547384def8>
- <https://github.com/bcgit/bc-java/commit/fd89fe918b37fea1c71e95fae50284a325b09721>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-59641) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_