CVE-2020-27793 json
An off-by-one overflow flaw was found in radare2 due to mismatched array length in core_java.c.
published 2022-08-19 4 y ago modified 2026-06-17 4 mo ago also EUVD-2020-20295
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 67%
- public exploits
- 0
- none known
Summary
An off-by-one overflow flaw was found in radare2 due to mismatched array length in core_java.c. This could allow an attacker to cause a crash, and perform a denail of service attack.
Patch / fix
- radare radare2 4.4.0
- radare2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 4.4.0-r0
alpine advisories ALPINE-CVE-2020-27793
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Exploit prediction
1.18% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/radareorg/radare2/issues/16304 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
- n/a radare2
Classification
- Weakness
-
- CWE-193 Off-by-one Error
References
-
github.com
/radareorg/radare2/commit/ced0223c7a1b3b5344af315715cd28fe7c0d9ebc
patch, third-party-advisory
-
github.com
/radareorg/radare2/issues/16304
exploit, issue-tracking, patch, third-party-advisory
Sources
- CVE List CVE-2020-27793
- NVD CVE-2020-27793
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