Insecure deserialization in Wire
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.
Summary
Due to how Wire handles type information in its serialization format, malicious payloads can be passed to a deserializer. e.g. using a surrogate on the sender end, an attacker can pass information about a different type for the receiving end. And by doing so allowing the serializer to create any type on the deserializing end. This is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300?view=vs-2019. This also applies to the fork of Wire.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AsynkronIT | Wire | up to 1.0.0 | — | No fix listed | CNA |
| — | Wire (NuGet) | up to 1.0.0 | — | No fix listed | GHSA-hpw7-3vq3-mmv6 |
- Wire VendorAsynkronIT Affected up to 1.0.0 Fixed in — No fix listed CNA
- Wire (NuGet) Vendor— Affected up to 1.0.0 Fixed in — No fix listed GHSA-hpw7-3vq3-mmv6
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-29508
- 2026-10-03 Alias added: GHSA-hpw7-3vq3-mmv6
References
Sources
- CVE-2021-29508 · CVE Program
- CVE-2021-29508 · NVD
- FIRST EPSS
- GHSA-hpw7-3vq3-mmv6 · GitHub Advisory Database · CC BY 4.0
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