What is CVE-2017-14061?

CVE-2017-14061 is a critical-severity vulnerability in GNU Libidn2, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2017-08-31.

How severe is CVE-2017-14061?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Integer overflow in GNU Libidn2

CVE-2017-14061

Integer overflow in the _isBidi function in bidi.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact.

Vulnerability class: Integer Overflow

Published 2017-08-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.024 (83.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000

Affected products

GNU Libidn2

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

gitlab.com/libidn/libidn2/commit/16853b6973a1e72fee2b7cccda85472cb9951305 (Patch, Third Party Advisory)
gitlab.com/libidn/libidn2/blob/master/NEWS (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2017-14061?: CVE-2017-14061 is a critical-severity vulnerability in GNU Libidn2, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2017-08-31.
How severe is CVE-2017-14061?: Critical severity. CVSS v3 base score is 9.8 out of 10.