CVE-2019-25004 json
Unsound casting in flatbuffers
published 2019-10-20 7 y ago modified 2026-06-17 4 mo ago also GHSA-gx73-2498-r55c , RUSTSEC-2019-0028 , EUVD-2021-1734
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 48%
- public exploits
- 0
- none known
Summary
An issue was discovered in the flatbuffers crate before 0.6.1 for Rust. Arbitrary bytes can be reinterpreted as a bool, defeating soundness.
Patch / fix
- crates.io flatbuffers 0.6.1
- google flatbuffers 0.6.1
Exploit prediction
0.58% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- rustsec.org https://rustsec.org/advisories/RUSTSEC-2019-0028.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| OSV | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | flatbuffers | >=0.4.0, <0.6.1 |
0.6.1 |
Classification
- Weakness
-
- CWE-704 Incorrect Type Conversion or Cast
References
-
rustsec.org
/advisories/RUSTSEC-2019-0028.html
web, exploit, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-25004
advisory
-
github.com
/google/flatbuffers/issues/5530
web, report
-
github.com
/google/flatbuffers
package
-
crates.io
/crates/flatbuffers
package
Sources
- CVE List CVE-2019-25004
- GitHub Advisory GHSA-gx73-2498-r55c
- NVD CVE-2019-25004
- OSV RUSTSEC-2019-0028
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.