CVE-2018-20456

Name: CVE-2018-20456
Creator: NVD / NIST
Published: 2018-12-25T19:29:00.29+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.00%

Last modified Jun 17, 2026

CVE-2018-20456 is a vulnerability of currently unknown severity. In radare2 prior to 3.1.1, the parseOperand function inside libr/asm/p/asm_x86_nz.c may allow attackers to cause a denial of service (application crash in libr/util/strbuf.c via a stack-based buffer over-read) by crafting an input file, a related issue to CVE-2018-20455.. EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

In radare2 prior to 3.1.1, the parseOperand function inside libr/asm/p/asm_x86_nz.c may allow attackers to cause a denial of service (application crash in libr/util/strbuf.c via a stack-based buffer over-read) by crafting an input file, a related issue to CVE-2018-20455.

Metrics

EPSS Probability

1.00%

58.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Radare	Radare2	< 3.1.1

References

https://github.com/radare/radare2/commit/9b46d38dd3c4de6048a488b655c7319f845af185Patch, Third Party Advisory
https://github.com/radare/radare2/issues/12372Exploit, Third Party Advisory
https://github.com/radare/radare2/commit/9b46d38dd3c4de6048a488b655c7319f845af185Patch, Third Party Advisory
https://github.com/radare/radare2/issues/12372Exploit, Third Party Advisory

Timeline

Published: Dec 25, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20456?

How severe is CVE-2018-20456?

Severity scoring for CVE-2018-20456 is pending analysis. The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20456?

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-2018-20456?

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

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Source: NVD / NIST