CVE-2016-2090

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

Off-by-one vulnerability in the fgetwln function in libbsd before 0.8.2 allows attackers to have unspecified impact via unknown vectors, which trigger a heap-based buffer overflow.

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 computed
Severity98% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
86.7%
KEV
Not listed

Published

January 13, 2017

Last Modified

May 13, 2026

Advisory Details (7)

Auto-updated May 14, 2026
Patch available.
generic

oss-security - Re: Heap buffer overflow in fgetwln function of libbsd

http://www.openwall.com/lists/oss-security/2016/01/28/5
generic

libbsd: Arbitrary code execution (GLSA 201607-13) — Gentoo security

https://security.gentoo.org/glsa/201607-13
generic

[SECURITY] Fedora 24 Update: libbsd-0.8.3-1.fc24 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIQKQ42Z7553D46QY3IMIQKS52QTNIHY/
generic

[SECURITY] Fedora 25 Update: libbsd-0.8.3-1.fc25 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KJE5SPSX7HEKLZ34LUTZLXWPEL2K353/
generic Patch Available

[SECURITY] [DLA 2052-1] libbsd security update

https://lists.debian.org/debian-lts-announce/2019/12/msg00036.html
generic

93881 – (CVE-2016-2090) libbsd: heap buffer overflow in fgetwln() (CVE-2016-2090)

https://bugs.freedesktop.org/show_bug.cgi?id=93881
generic

Heap buffer overflow in fgetwln function of libbsd | The Fuzzing Project

https://blog.fuzzing-project.org/36-Heap-buffer-overflow-in-fgetwln-function-of-libbsd.html

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibbsd0-udeb (0.8.2-1ubuntu0.1) @ xenial2026-05-20ubuntu

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.

All Vendor Advisories

(1)

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 13× in last 7d / 41× 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 114 total refreshes for this CVE.

  1. 2026-07-25 07:11 UTCOSV refresh
  2. 2026-07-23 14:14 UTCEPSS rescore
  3. 2026-07-23 01:22 UTCEG score recompute
  4. 2026-07-22 22:01 UTCEG score recompute
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  1. 2026-07-08 02:05 UTCOSV refresh
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  24. 2026-06-19 13:55 UTCOSV refresh
  25. 2026-06-18 17:50 UTCEPSS rescore
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  49. 2026-05-31 00:14 UTCEPSS rescore
  50. 2026-05-30 21:23 UTCOSV refresh
  51. 2026-05-29 13:41 UTCEPSS rescore
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  68. 2026-05-20 08:36 UTCVendor advisory
  69. 2026-05-20 08:36 UTCGHSA enrichment
  70. 2026-05-20 04:54 UTCVendor advisory
  71. 2026-05-20 04:54 UTCGHSA enrichment
  72. 2026-05-20 01:12 UTCVendor advisory
  73. 2026-05-20 01:12 UTCGHSA enrichment
  74. 2026-05-19 21:30 UTCVendor advisory
  75. 2026-05-19 21:30 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2016-2090?
CVE-2016-2090 is a critical vulnerability published on January 13, 2017. Off-by-one vulnerability in the fgetwln function in libbsd before 0.8.2 allows attackers to have unspecified impact via unknown vectors, which trigger a heap-based buffer overflow.
When was CVE-2016-2090 disclosed?
CVE-2016-2090 was first published in the National Vulnerability Database on January 13, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-2090 actively exploited?
CVE-2016-2090 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-2090?
CVE-2016-2090 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-2090?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-2090, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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