CVE-2026-13586
published 2026-08-03CVE-2026-13586: 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…
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.35%
28.3th percentile
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).
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| bouncycastle | bc-java | < 1.85 | 1.85 |
| bouncycastle | bouncy_castle_for_java_lts | <= 2.73.11 | — |
| bouncycastle | fips_java_api | >= 1.0.0 < 1.0.2.7 | 1.0.2.7 |
| bouncycastle | fips_java_api | >= 2.0.0 < 2.0.2 | 2.0.2 |
| bouncycastle | fips_java_api | >= 2.1.0 < 2.1.3 | 2.1.3 |
| jboss-eap-7 | eap74-els-openjdk11-openshift-rhel8 | — | — |
| jboss-eap-7 | eap74-els-openjdk17-openshift-rhel8 | — | — |
| jboss-eap-7 | eap74-els-openjdk8-openshift-rhel8 | — | — |
| legion_of_the_bouncy_castle_inc | bc-fja | >= 1.0.0 < 1.0.2.7 | 1.0.2.7 |
| legion_of_the_bouncy_castle_inc | bc-fja | >= 2.0.0 < 2.0.2 | 2.0.2 |
| legion_of_the_bouncy_castle_inc | bc-fja | >= 2.1.0 < 2.1.3 | 2.1.3 |
| legion_of_the_bouncy_castle_inc | bc-java | < 1.85 | 1.85 |
| legion_of_the_bouncy_castle_inc | bc-lts-java | >= 2.73.0 < 2.73.12 | 2.73.12 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv4.05.3MEDIUMCVSS: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
vendor_redhat7.5HIGH
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GHSA
In Bouncy Castle for Java before 1.85, PKCS#12 MAC and bag-decryption KDF iteration-count bound (DoS).
ghsa_unreviewed·2026-08-03
CVE-2026-13586 [MEDIUM] CWE-770 In Bouncy Castle for Java before 1.85, PKCS#12 MAC and bag-decryption KDF iteration-count bound (DoS).
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).
Red Hat
bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound
vendor_redhat·2026-08-03·CVSS 7.5
CVE-2026-13586 [HIGH] CWE-606 bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound
bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound
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).
A flaw was found in Bouncy Castle for Java. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by exploiting an iteration-count bound issue in the PKCS#12 Message Authentication Code (MAC) and bag-decryption Key Derivation Function (KDF). This could make the affected system unresponsive or unavailable to legitimate users.
Statement: Moderate: This vulne
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-13586 bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound [fedora-all]
bugzilla·2026-08-27·CVSS 7.5
CVE-2026-13586 [HIGH] CVE-2026-13586 bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound [fedora-all]
CVE-2026-13586 bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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).
Bugzilla
CVE-2026-13586 bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound [epel-all]
bugzilla·2026-08-27·CVSS 7.5
CVE-2026-13586 [HIGH] CVE-2026-13586 bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound [epel-all]
CVE-2026-13586 bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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).
Bugzilla
CVE-2026-13586 bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound
bugzilla·2026-08-03·CVSS 7.5
CVE-2026-13586 [HIGH] CVE-2026-13586 bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound
CVE-2026-13586 bouncycastle: Bouncy Castle for Java: Denial of Service via PKCS#12 MAC and bag-decryption KDF iteration-count bound
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).
2026-08-03
Published