Trust Wallet Core: Buffer Over-read
CVE-2025-66692 is a high-severity buffer over-read vulnerability in Trust Wallet Core from Trustwallet, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 4.4.0 as the first without the flaw, so updating Trust Wallet Core to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.41% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Trust Wallet Core to 4.4.0 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Trustwallet | Trust Wallet Core | before 4.4.0 | 4.4.0 |
Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by CISA (ADP).
Official description
A buffer over-read in the PublicKey::verify() method of Binance - Trust Wallet Core before commit 5668c67 allows attackers to cause a Denial of Service (DoS) via a crafted input.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Buffer Over-read
The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Technical write-ups (may include proof of concept)
- gist.github.com/inkman97/b791189338f73b758c31a7db3cd50c2dExploit, Third Party Advisory
Recent Buffer Over-read vulnerabilities
- 7.5 High severity
- 9.1 Critical severity
- 7.3 High severity
- 7.5 High severity
- 7.5 High severity
- 7.8 High severity
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