Memory Allocation with Excessive Size Value Affecting org.bouncycastle:bcprov-lts8on package, versions [,2.73.12)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published4 Aug 2026
- disclosed3 Aug 2026
- creditUnknown
Introduced: 3 Aug 2026
NewCVE-2026-12185 (opens in a new tab)How to fix?
Upgrade org.bouncycastle:bcprov-lts8on to version 2.73.12 or higher.
Overview
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the BcKeyStoreSpi.engineLoad() method, which sizes buffers for the certificate chain array, encoded certificates, encoded key material, entry data, and PBE salts directly from readInt() length fields before the trailing HMAC integrity check runs. An attacker can exhaust memory and trigger an OutOfMemoryError in the process loading a keystore by supplying a BKS or UBER keystore file whose length fields are set to 0x7FFFFFFF, forcing allocation attempts of roughly 2 GB each. This requires the application to load an attacker-supplied or attacker-modified keystore of the BKS or UBER type.