CVE-2022-42920Apache Commons BCEL prior to 6.6.0 allows producing arbitrary bytecode via out-of-bounds writing
- 9.8CriticalCVSS base score
- 3.5%Exploitation in 30 daysEPSS · top 11% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Apache Commons BCEL has a number of APIs that would normally only allow changing specific class characteristics. However, due to an out-of-bounds writing issue, these APIs can be used to produce arbitrary bytecode. This could be abused in applications that pass attacker-controllable data to those APIs, giving the attacker more control over the resulting bytecode than otherwise expected. Update to Apache Commons BCEL 6.6.0.
Timeline
ID reserved
By apache
- 24 days later
· 24 days later
Published
- 21 months later
· 21 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 3.5% · top 11% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
Apache Software Foundation · Apache Commons BCEL
- affected Apache Commons BCEL – < 6.6.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.apache.bcel:bcelGHSA-97xg-phpr-rg8q (opens in a new tab)
References
References6
- https://lists.apache.org/thread/lfxk7q8qmnh5bt9jm6nmjlv5hsxjhrz4 (opens in a new tab)x_transferred
- [oss-security] 20221107 Re: CVE-2022-42920: Apache Commons BCEL prior to 6.6.0 allows producing arbitrary bytecode via out-of-bounds writing (opens in a new tab)mailing-listx_transferred
- FEDORA-2022-01a56f581c (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2022-0e358addb8 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2022-f60a52e054 (opens in a new tab)vendor-advisoryx_transferred
- GLSA-202401-25 (opens in a new tab)vendor-advisoryx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-7295 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-97xg-phpr-rg8q (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-42920)Record last updated .