CVE-2025-12888
BaseFortify
Publication date: 2025-11-21
Last updated on: 2025-12-04
Assigner: wolfSSL Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| wolfssl | wolfssl | 5.8.2 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-203 | The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is related to the X25519 cryptographic implementation on Xtensa-based ESP32 chips. It arises from timing side channels caused by compiler optimizations and CPU architecture limitations, which can potentially leak sensitive information during cryptographic operations. To mitigate this, it is recommended to use the low memory implementations of X25519, which are now the default for Xtensa.
How can this vulnerability impact me? :
The vulnerability could allow attackers to exploit timing side channels to gain information about cryptographic keys or operations on affected Xtensa-based ESP32 devices. This could weaken the security of cryptographic communications or data protected by X25519 on these devices.
What immediate steps should I take to mitigate this vulnerability?
If targeting Xtensa-based ESP32 chips, it is recommended to use the low memory implementations of X25519, which is now turned on as the default for Xtensa.