CVE-2026-12803 KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD forgery)
| Reporter | Title | Published | Views | Family All 47 |
|---|---|---|---|---|
 | CVE-2026-12803 | 3 Aug 202602:52 | – | attackerkb |
 | Cryptographic Failure org.bouncycastle:bcprov-jdk18on Dependency in Bamboo Data Center | 8 Aug 202617:30 | – | atlassian |
 | CVE-2026-12803 | 3 Aug 202606:09 | – | circl |
 | CVE-2026-12803 | 3 Aug 202602:52 | – | cve |
 | CVE-2026-12803 | 3 Aug 202602:52 | – | debiancve |
 | EUVD-2026-52134 | 3 Aug 202602:52 | – | euvd |
 | CVE-2026-12803 | 3 Aug 202604:16 | – | nvd |
 | openSUSE 16: bouncycastle / bouncycastle-javadoc / bouncycastle-jmail / etc (openSUSE-SU-2026:21538-1) | 8 Aug 202600:00 | – | nessus |
| SUSE SLED15: bouncycastle / bouncycastle-pg / bouncycastle-pkix / etc (SUSE-SU-2026:3559-1) | 12 Aug 202600:00 | – | nessus |
| Linux Distros Unpatched Vulnerability : CVE-2026-12803 | 3 Aug 202600:00 | – | nessus |
10
[
{
"vendor": "Legion of the Bouncy Castle Inc.",
"product": "BC-JAVA",
"platforms": [
"all"
],
"collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java/",
"packageName": "bcprov",
"repo": "https://github.com/bcgit/bc-java",
"packageURL": "pkg:maven/org.bouncycastle/bcprov-jdk18on",
"modules": [
"core"
],
"programFiles": [
"KCCMBlockCipher"
],
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "1.85",
"versionType": "maven"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Legion of the Bouncy Castle Inc.",
"product": "BC-LTS-JAVA",
"platforms": [
"all"
],
"collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-lts/",
"packageName": "bcprov-lts8on",
"repo": "https://github.com/bcgit/bc-lts-java",
"packageURL": "pkg:maven/org.bouncycastle/bcprov-lts8on",
"modules": [
"core"
],
"programFiles": [
"KCCMBlockCipher"
],
"versions": [
{
"status": "affected",
"version": "2.73.0",
"lessThan": "2.73.12",
"versionType": "maven"
}
],
"defaultStatus": "unaffected"
}
]Data
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03 Aug 2026 05:58Current
CVSS 48.7
EPSS0.00174