What is CVE-2018-19843?

CVE-2018-19843 is a medium-severity vulnerability in Radare Radare2, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2018-12-04.

How severe is CVE-2018-19843?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Out-of-bounds Read in Radare Radare2

CVE-2018-19843

opmov in libr/asm/p/asm_x86_nz.c in radare2 before 3.1.0 allows attackers to cause a denial of service (buffer over-read) via crafted x86 assembly data, as demonstrated by rasm2.

Vulnerability class: Buffer Overflow

Published 2018-12-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: +0.000

Affected products

Radare Radare2

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

github.com/radare/radare2/issues/12242 (Exploit, Third Party Advisory)
github.com/radare/radare2/commit/f17bfd9f1da05f30f23a4dd05e9d2363e1406948 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-19843?: CVE-2018-19843 is a medium-severity vulnerability in Radare Radare2, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2018-12-04.
How severe is CVE-2018-19843?: Medium severity. CVSS v3 base score is 5.5 out of 10.