CVE-2022-1240

Name: CVE-2022-1240
Creator: NVD / NIST
Published: 2022-04-06T11:15:07.587+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.73%

Last modified Jun 17, 2026

CVE-2022-1240 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Heap buffer overflow in libr/bin/format/mach0/mach0.c in GitHub repository radareorg/radare2 prior to 5.8.6. If address sanitizer is disabled during the compiling, the program should executes into the `r_str_ncpy` function. EPSS estimates a 0.73% chance of exploitation in the next 30 days.

Description

Heap buffer overflow in libr/bin/format/mach0/mach0.c in GitHub repository radareorg/radare2 prior to 5.8.6. If address sanitizer is disabled during the compiling, the program should executes into the `r_str_ncpy` function. Therefore I think it is very likely to be exploitable. For more general description of heap buffer overflow, see [CWE](https://cwe.mitre.org/data/definitions/122.html).

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.73%

49.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Radare	Radare2	<= 5.6.6

References

https://github.com/radareorg/radare2/commit/ca8d8b39f3e34a4fd943270330b80f1148129de4Patch, Third Party Advisory
https://huntr.dev/bounties/e589bd97-4c74-4e79-93b5-0951a281faccExploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/radareorg/radare2/commit/ca8d8b39f3e34a4fd943270330b80f1148129de4Patch, Third Party Advisory
https://huntr.dev/bounties/e589bd97-4c74-4e79-93b5-0951a281faccExploit, Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Apr 6, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-1240?

How severe is CVE-2022-1240?

CVE-2022-1240 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.

How do I fix CVE-2022-1240?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-1240?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST