CVE-2020-27795

Name: CVE-2020-27795
Creator: NVD / NIST
Published: 2022-08-19T23:15:08.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.17%

Last modified Jun 17, 2026

CVE-2020-27795 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A segmentation fault was discovered in radare2 with adf command. In libr/core/cmd_anal.c, when command "adf" has no or wrong argument, anal_fcn_data (core, input + 1) --> RAnalFunction *fcn = r_anal_get_fcn_in (core->anal, core->offset, -1); returns null pointer for fcn causing segmentation fault later in ensure_fcn_range (fcn).. EPSS estimates a 1.17% chance of exploitation in the next 30 days.

Description

A segmentation fault was discovered in radare2 with adf command. In libr/core/cmd_anal.c, when command "adf" has no or wrong argument, anal_fcn_data (core, input + 1) --> RAnalFunction *fcn = r_anal_get_fcn_in (core->anal, core->offset, -1); returns null pointer for fcn causing segmentation fault later in ensure_fcn_range (fcn).

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.17%

63.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Radare	Radare2	< 4.4.0

References

https://github.com/radareorg/radare2/commit/4d3811681a80f92a53e795f6a64c4b0fc2c8dd22Patch, Third Party Advisory
https://github.com/radareorg/radare2/issues/16215Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/radareorg/radare2/pull/16230Issue Tracking, Patch, Third Party Advisory
https://github.com/radareorg/radare2/commit/4d3811681a80f92a53e795f6a64c4b0fc2c8dd22Patch, Third Party Advisory
https://github.com/radareorg/radare2/issues/16215Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/radareorg/radare2/pull/16230Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Aug 19, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27795?

How severe is CVE-2020-27795?

CVE-2020-27795 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.17% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27795?

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-2020-27795?

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

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Source: NVD / NIST