TI-2020-16876 Aliases CVE-2020-27794 GHSA-wjh8-mh8q-qg7h

Double free in radare2

MEDIUM 42CWE-415Published 2022-08-19 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.0114 66th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	radare2	Fixed in v4.4.0.	—	No fix listed	CNA

radare2 Vendor— Affected Fixed in v4.4.0. Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:radare:radare2::::::::	before 4.4.0	Vulnerable	radareorg

cpe:2.3:a:radare:radare2:*:*:*:*:*:*:*:* Versions before 4.4.0 Vulnerable ·radareorg

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-27794
2026-10-03 Alias added: GHSA-wjh8-mh8q-qg7h

References

Exploit 1

https://github.com/radareorg/radare2/issues/16303

Patch 1

https://github.com/radareorg/radare2/commit/cb8b683758edddae2d2f62e8e63a738c39f92683

TI-2023-25089 An out-of-bounds read in radare2 v.5.8.9 and before exists in the print_insn32 function… CVSS 3.1CRITICAL 9.8
TI-2023-25088 An out-of-bounds read in radare2 v.5.8.9 and before exists in the print_insn32_fpu… CVSS 3.1CRITICAL 9.8
TI-2021-12172 Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function. CVSS 3.1CRITICAL 10.0
TI-2026-07640 radare2 6.1.5 Use-After-Free via gdbr_pids_list() CVSS 4.0HIGH 8.7
TI-2026-07639 radare2 6.1.5 Use-After-Free via gdbr_threads_list() CVSS 4.0HIGH 8.7
TI-2023-03993 Heap-based Buffer Overflow in radareorg/radare2 CVSS 3.1CRITICAL 9.8

See all 178 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences