CVE-2021-28027 json
Loading a bgzip block can write out of bounds if size overflows.
published 2021-01-07 5 y ago modified 2026-06-17 4 mo ago also GHSA-cpqj-r29q-chrh , RUSTSEC-2021-0027 , EUVD-2022-3606
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
An issue was discovered in the bam crate before 0.1.3 for Rust. There is an integer underflow and out-of-bounds write during the loading of a bgzip block.
Patch / fix
Exploit prediction
1.29% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).
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 |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| OSV | 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 | bam | <0.1.3 >=0.0.0-0, <0.1.3 |
0.1.3 |
Classification
- Weakness
-
- CWE-191 Integer Underflow (Wrap or Wraparound)
References
-
rustsec.org
/advisories/RUSTSEC-2021-0027.html
web, patch, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-28027
advisory
-
gitlab.com
/tprodanov/bam
package
-
gitlab.com
/tprodanov/bam/-/issues/4
web, report
-
crates.io
/crates/bam
package
Sources
- CVE List CVE-2021-28027
- GitHub Advisory GHSA-cpqj-r29q-chrh
- NVD CVE-2021-28027
- OSV RUSTSEC-2021-0027
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