BCM5820X: Deserialization of Untrusted Data
CVE-2025-24919 is a high-severity deserialization of untrusted data vulnerability in BCM5820X from Broadcom, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 2.42% chance of exploitation within 30 days, higher than 84% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update ControlVault3 to 5.15.10.14 or a later version.
- Update ControlVault3 Plus to 6.2.26.36 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Broadcom | BCM5820X | Not specified in the record | Not stated |
| Dell | ControlVault3 | before 5.15.10.14 | 5.15.10.14 |
| Dell | ControlVault3 Plus | before 6.2.26.36 | 6.2.26.36 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H. Scored by CNA (cisco.com).
Official description
A deserialization of untrusted input vulnerability exists in the cvhDecapsulateCmd functionality of Dell ControlVault3 prior to 5.15.10.14 and ControlVault3 Plus prior to 6.2.26.36. A specially crafted ControlVault response to a command can lead to arbitrary code execution. An attacker can compromise a ControlVault firmware and have it craft a malicious response to trigger this vulnerability.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How developers prevent this class of flaw
- If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
- When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
- Explicitly define a final object() to prevent deserialization.
More Deserialization of Untrusted Data vulnerabilities (CWE-502)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in BCM5820X
- 8.8 High severity
- 7.3 High severity
- 7.3 High severity
- 7.3 High severity
- 7.3 High severity
- 8.8 High severity
Recent Deserialization of Untrusted Data vulnerabilities
- 9.8 Critical severity
- 7.5 High severity
- 8.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
Spotted an error? Tell us.