CVE-2026-54697
ConnectBot SSH Client Library is written in Kotlin with Kaitai Struct and KStateMachine
- Risk score
- 41/100
- CVSS
- 6.7 v4.0
- Exploit chance (30 days)
- 0.1%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- ConnectBot SSH Client Library is written in Kotlin with Kaitai Struct and KStateMachine. Prior to 0.3.1, DerReader.readLength() accepts excessive long-form DER length octets, accumulates them into an Int, and primitive readers allocate arrays without checking the declared size against the remaining input. An applicati…
- Affected
- See advisory
- Fix
- Upgrade the product to 0.3.1 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.7 medium
References
Original description
ConnectBot SSH Client Library is written in Kotlin with Kaitai Struct and KStateMachine. Prior to 0.3.1, DerReader.readLength() accepts excessive long-form DER length octets, accumulates them into an Int, and primitive readers allocate arrays without checking the declared size against the remaining input. An application or user that loads an attacker-provided private-key file through SshClient.authenticatePublicKey(), SshKeys.decodePemPrivateKey(), SshSigning.sign(), or SshSigning.getPublicKey() can trigger integer wraparound, excessive allocation, or an uncaught OutOfMemoryError. SSH server host keys and agent-forwarding messages do not use this application-supplied private-key input path. No usable weakened key and no confidentiality or integrity impact have been demonstrated. This issue is fixed in version 0.3.1.
Last activity 13 Oct 2026. Patch Forecast updates every hour.