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.
CVE-2017-14062
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EG Risk
- 50(Track)EG Risk 50/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity98% × 45%Exploitation4% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 4%
- EPSS %ILE
- 90%
- KEV
- Not listed
Published
August 31, 2017
Last Modified
June 17, 2026
Advisory Details (4)
Auto-updated Sep 15, 2026[SECURITY] [DLA 1447-1] libidn security update
https://lists.debian.org/debian-lts-announce/2018/07/msg00040.htmllib/puny_decode: Fix integer overflow (found by fuzzing) (3284eb34) · Commits · libidn / libidn2 · GitLab
https://gitlab.com/libidn/libidn2/commit/3284eb342cd0ed1a18786e3fcdf0cdd7e76676bd[SECURITY] [DSA 3988-1] libidn2-0 security update
http://www.debian.org/security/2017/dsa-3988Patch Availability(4)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | idn2 (0.16-1ubuntu0.1) @ zesty | 2026-05-20 | ubuntu |
| ubuntu | idn2 (0.10-3ubuntu0.1~esm1) @ xenial | 2026-05-20 | ubuntu |
| ubuntu | libidn11-java (1.28-1ubuntu2.2) @ trusty | 2026-05-20 | ubuntu |
| ubuntu | libidn11 (1.23-2ubuntu0.2) @ precise | 2026-05-20 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(9 across 7 ecosystems)
Debian:7(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libidn | 1.25-2, 1.25-2+deb7u1, 1.25-2+deb7u2 | 1.25-2+deb7u3 | — |
| libidn2-0 | 0.8-2 | 0.8-2+deb7u1 | — |
Debian:8(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libidn | 1.29-1, 1.29-1+deb8u1, 1.29-1+deb8u2 | 1.29-1+deb8u3 | — |
| libidn2-0 | 0.10-2 | 0.10-2+deb8u1 | — |
Debian:11(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libidn | — | 1.33-2 | — |
Debian:12(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libidn | — | 1.33-2 | — |
Debian:13(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libidn | — | 1.33-2 | — |
Debian:14(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libidn | — | 1.33-2 | — |
Debian:9(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libidn2-0 | 0.16-1 | 0.16-1+deb9u1 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(4)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 6× in last 7d / 24× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 162 total refreshes for this CVE.
- 2026-09-19 15:36 UTCEPSS rescore
- 2026-09-18 19:22 UTCEPSS rescore
- 2026-09-17 19:22 UTCEPSS rescore
- 2026-09-15 04:44 UTCOSV refresh
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- 2026-08-27 04:34 UTCOSV refresh
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- 2026-08-18 13:43 UTCEPSS rescore
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- 2026-08-10 17:38 UTCOSV refresh
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- 2026-07-25 18:00 UTCOSV refresh
- 2026-07-25 14:13 UTCEPSS rescore
- 2026-07-23 14:15 UTCEPSS rescore
- 2026-07-23 01:27 UTCEG score recompute
- 2026-07-22 22:06 UTCEG score recompute
- 2026-07-22 14:04 UTCEPSS rescore
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- 2026-07-09 19:06 UTCEPSS rescore
- 2026-07-08 15:10 UTCEPSS rescore
- 2026-07-08 12:45 UTCOSV refresh
- 2026-07-07 13:42 UTCEPSS rescore
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- 2026-06-18 17:50 UTCEPSS rescore
- 2026-06-17 17:50 UTCEPSS rescore
Frequently asked(5)
What is CVE-2017-14062?
When was CVE-2017-14062 disclosed?
Is CVE-2017-14062 actively exploited?
What is the CVSS score of CVE-2017-14062?
How do I remediate CVE-2017-14062?
Dependency Blast Radius
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