What is CVE-2017-9729?

CVE-2017-9729 is a high-severity vulnerability in Uclibc, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2017-06-16.

How severe is CVE-2017-9729?

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

Vulnerability in Uclibc

CVE-2017-9729

In uClibc 0.9.33.2, there is stack exhaustion (uncontrolled recursion) in the check_dst_limits_calc_pos_1 function in misc/regex/regexec.c when processing a crafted regular expression.

Published 2017-06-16 · 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: 0.011 (63.8th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Uclibc — versions 0.9.33.2

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

openwall.com/lists/oss-security/2017/06/16/4 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2017-9729?: CVE-2017-9729 is a high-severity vulnerability in Uclibc, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2017-06-16.
How severe is CVE-2017-9729?: High severity. CVSS v3 base score is 7.5 out of 10.