CVE-2020-27794
A double free issue was discovered in radare2 in cmd_info.c:cmd_info(). Successful exploitation...
A double free issue was discovered in radare2 in cmd_info.c:cmd_info(). Successful exploitation could lead to modification of unexpected memory locations and potentially causing a crash.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A double free issue was discovered in radare2 in cmd_info.c:cmd_info(). Successful exploitation could lead to modification of unexpected memory locations and potentially causing a crash.
- Record
CVE-2020-27794- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-415
- Updated
- 2026-11-02
CVE List No score
A double free issue was discovered in radare2 in cmd_info.c:cmd_info(). Successful exploitation could lead to modification of unexpected memory locations and potentially causing a crash.
- Record
CVE-2020-27794- Weakness
- CWE-415
- Updated
- 2026-11-02
EUVDEUVD-2020-20296 No score
A double free issue was discovered in radare2 in cmd_info.c:cmd_info(). Successful exploitation could lead to modification of unexpected memory locations and potentially causing a crash.
- Record
EUVD-2020-20296- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wjh8-mh8q-qg7h
A double free issue was discovered in radare2 in cmd_info.c:cmd_info(). Successful exploitation...
A double free issue was discovered in radare2 in cmd_info.c:cmd_info(). Successful exploitation could lead to modification of unexpected memory locations and potentially causing a crash.
- Record
GHSA-wjh8-mh8q-qg7h- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-415
- Updated
- 2026-11-02
OSVALPINE-CVE-2020-27794
A double free issue was discovered in radare2 in cmd_info.c:cmd_info(). Successful exploitation could lead to modification of unexpected memory locations and potentially causing a crash.
- Record
ALPINE-CVE-2020-27794- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Updated
- 2026-11-03
OSV
A double free issue was discovered in radare2 in cmd_info.c:cmd_info(). Successful exploitation could lead to modification of unexpected memory locations and potentially causing a crash.
- Record
CVE-2020-27794- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-27794
A double free issue was discovered in radare2 in cmd_info.c:cmd_info(). Successful exploitation could lead to modification of unexpected memory locations and potentially causing a crash.
- Record
UBUNTU-CVE-2020-27794- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
radare2Alpine:v3.18 |
before 4.4.0-r0 | 4.4.0-r0 |
radare2Alpine:v3.19 |
before 4.4.0-r0 | 4.4.0-r0 |
radare2Alpine:v3.20 |
before 4.4.0-r0 | 4.4.0-r0 |
radare2Alpine:v3.21 |
before 4.4.0-r0 | 4.4.0-r0 |
radare2Alpine:v3.22 |
before 4.4.0-r0 | 4.4.0-r0 |
radare2Alpine:v3.23 |
before 4.4.0-r0 | 4.4.0-r0 |
radare2Alpine:v3.24 |
before 4.4.0-r0 | 4.4.0-r0 |
radare2Ubuntu:16.04:LTS |
All versions, plus listed versions 0.9.6-3.1ubuntu1 |
None known |
radare2Ubuntu:Pro:20.04:LTS |
All versions, plus listed versions 3.2.1+dfsg-5build14.0.0+dfsg-14.2.1+dfsg-14.2.1+dfsg-24.2.1+dfsg-2ubuntu0.1~esm1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, facts, references | OSV | |
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-27794 is a critical vulnerability (CVSS 9.1) in Radare Radare2, published August 19, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.14%, the 66th percentile. Fixed in radare2 4.4.0-r0.
References
github.com/radareorg/radare2/issues/16303
nvd.nist.gov/vuln/detail/CVE-2020-27794
security.alpinelinux.org/vuln/CVE-2020-27794
ubuntu.com/security/CVE-2020-27794
cve.org/CVERecord?id=CVE-2020-27794