Allocation of Resources Without Limits or Throttling Affecting bouncycastle.cryptography package, versions [,2.7.0)
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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- published6 Oct 2026
- disclosed2 Oct 2026
- creditUnknown
Introduced: 2 Oct 2026
NewCVE-2026-63572 (opens in a new tab)How to fix?
Upgrade BouncyCastle.Cryptography to version 2.7.0 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to unbounded PKCS#12 iteration counts in Pkcs12Store.VerifyPbeMac and Pkcs12Utilities.ConvertToDefiniteLength. An attacker can exhaust CPU by supplying a crafted PKCS#12/PFX file with a very large iteration count in MacData or in the PBE parameters of an encrypted SafeContents or shrouded key bag, causing the loader to run the key-derivation loop before the MAC or password is checked.