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CVE-2026-13586
PKCS#12 MAC and bag-decryption KDF iteration-count bound (DoS)
Medium5.3EPSS 0.62%
- Published
- Updated
- Reserved
- Assigned by
- bcorg
Description
In Bouncy Castle for Java before 1.85, PKCS#12 MAC and bag-decryption KDF iteration-count bound (DoS). This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| bcorgCNA (assigner) | 4.0 | Medium5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber |
| NVDNVD · Analyzed | 4.0 | Medium5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber |
- EPSS (exploitation in 30 days)
- 0.62% · top 50% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
Legion of the Bouncy Castle Inc. · BC-JAVA
- affected < 1.85
Legion of the Bouncy Castle Inc. · BC-LTS-JAVA
- affected 2.73.0 – < 2.73.12
Legion of the Bouncy Castle Inc. · BC-FJA
- affected 1.0.0 – < 1.0.2.7
- affected 2.0.0 – < 2.0.2
- affected 2.1.0 – < 2.1.3
References (3)
- https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9013586 (opens in a new tab)vendor-advisory
- https://github.com/bcgit/bc-java/commit/fa59cc23502f73def89d94374540cc92af647b96 (opens in a new tab)patch
- https://github.com/bcgit/bc-java/commit/75d60dfb4ca72bea6da96234138bc9b1556ef5b0 (opens in a new tab)patch
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-13586)Record last updated .