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No exploitation reportedFix available

CVE-2020-27795

No exploitation reported by the sources we read.

  • Published2022-08-19
  • Fixed in4.4.0
  • WeaknessCWE-908

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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).

Timeline

dates in UTC
  1. 2022-08-1923:15CVE publishedNVD

Versions per branch

NVD
Radare radare2
BranchAffectedFixed in
4.4< 4.4.04.4.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • radare2Ubuntu:Pro:20.04:LTSall versions · no fixed version listed
  • radare2Ubuntu:Pro:18.04:LTSall versions · no fixed version listed
  • radare2Ubuntu:16.04:LTSall versions · no fixed version listed
  • radare2CleanStartall versions · fixed in 4.4.0-r0
  • radare2Alpine:v3.24all versions · fixed in 4.4.0-r0
  • radare2Alpine:v3.23all versions · fixed in 4.4.0-r0
  • radare2Alpine:v3.22all versions · fixed in 4.4.0-r0
  • radare2Alpine:v3.21all versions · fixed in 4.4.0-r0

3 more package ranges on OSV.dev

Vendor advisories

  • CVE-2020-27795 Red Hat Product Security

    radare2: segmentation fault leads to a DoS

Full record on NVD

Fix

  1. Update Radare radare2 to 4.4.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.5read 2026-10-23
  • CNAweakness (CWE)CWE-908known since 2026-10-23
  • NVDweakness (CWE)CWE-908read 2026-10-23
  • FIRST EPSSEPSS score1.6 %2026-11-09
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2022-08-19
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-r23c-h6ff-98mj

Frequently asked questions

What is CVE-2020-27795?

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).

Is CVE-2020-27795 actively exploited?

Active exploitation of CVE-2020-27795 has not been confirmed. Its EPSS score was 1.6% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-27795?

CVE-2020-27795 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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