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Fencer Vulns
critical 9.8

CVE-2017-14062 json

Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service…

published 2017-08-31 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-5576

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.9%
EPSS 3.9% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

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

Patch / fix

  • gnu libidn2 2.0.4
  • libidn Debian 14, Debian 13, Debian 12 1.33-2

debian advisories DEBIAN-CVE-2017-14062

  • libidn Ubuntu 14.04 LTS 1.28-1ubuntu2.2
  • libidn Ubuntu 16.04 LTS 1.32-3ubuntu1.2
  • libidn2-0 Ubuntu Pro 14.04 LTS 0.9-1ubuntu0.1~esm1
  • libidn2-0 Ubuntu Pro 16.04 LTS 0.10-3ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2017-14062

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libidn SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 1.10-7.3.1
  • libidn SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 1.28-5.3.1

suse advisories SUSE-SU-2018:0903-1SUSE-SU-2018:0878-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-14062 updated cvss 3.3

libidn2: Integer overflow in puny_decode.c/decode_digit

  • Red Hat Enterprise Linux 5 libidn Red Hat Enterprise Linux 6 libidn Red Hat Enterprise Linux 7 libidn, emacs-libidn
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.89% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.