What is CVE-2017-9763?

CVE-2017-9763 is a high-severity vulnerability in Radare Radare2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2017-06-19.

How severe is CVE-2017-9763?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Radare Radare2

CVE-2017-9763

The grub_ext2_read_block function in fs/ext2.c in GNU GRUB before 2013-11-12, as used in shlr/grub/fs/ext2.c in radare2 1.5.0, allows remote attackers to cause a denial of service (excessive stack use and application crash) via a crafted binary file, related to use of a variable-size stack array.

Vulnerability class: Buffer Overflow

Published 2017-06-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.041 (90.4th percentile), scored 2026-10-06.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.042 · newest: 0.041 · change: -0.001

Affected products

Radare Radare2 — versions 1.5.0

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com/radare/radare2/issues/7723 (Patch, Third Party Advisory)
git.savannah.gnu.org/cgit/grub.git/commit/grub-core/fs/ext2.c (Patch, Third Party Advisory)
github.com/radare/radare2/commit/65000a7fd9eea62359e6d6714f17b94a99a82edd (Patch, Third Party Advisory)
www.securityfocus.com/bid/99141 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-9763?: CVE-2017-9763 is a high-severity vulnerability in Radare Radare2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2017-06-19.
How severe is CVE-2017-9763?: High severity. CVSS v3 base score is 7.5 out of 10.