CVE-2026-16459 Timing side-channel in RSA PKCS#1 v1.5 decryption in Oberon PSA Crypto
Attackers can recover plaintexts from RSA PKCS#1 v1.5 decryption via timing side-channel attacks in the Oberon PSA Crypto library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-16459?
CVE-2026-16459 is a medium-severity vulnerability in Oberon PSA Crypto, published on 13 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Padding oracle attack vulnerability in Oberon microsystem AG’s Oberon PSA Crypto library in all versions since 1.0.0 and prior to 2.1.1 allows an attacker to recover plaintexts via timing measurements of RSA PKCS#1 v1.5 decrypt operations.
Which versions are affected by CVE-2026-16459?
How do I fix CVE-2026-16459?
No fix has been published for CVE-2026-16459 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-16459 being exploited?
There is no known exploitation of CVE-2026-16459 in the wild and no public exploit code.
Sources
Also known as GHSA-f34q-f47h-v25c.