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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 9.8Exploit: None knownExposed: 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 PROB
3%
EPSS %ILE
88%
KEV
Not listed

Published

January 13, 2017

Last Modified

June 17, 2026

Advisory Details (8)

Auto-updated Sep 23, 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
generic

Fix heap buffer overflow in fgetwln() - libbsd - Utility functions from BSD systems (mirrored from https://gitlab.freedesktop.org/libbsd/libbsd)

https://cgit.freedesktop.org/libbsd/commit/?id=c8f0723d2b4520bdd6b9eb7c3e7976de726d7ff7

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.

Affected Packages

(8 across 8 ecosystems)
Alpine:v3.2(1)
PackageVulnerable rangeFixed inDependents
libbsd0.4.2-r0, 0.6.0-r0, 0.6.0-r10.6.0-r2—
Alpine:v3.3(1)
PackageVulnerable rangeFixed inDependents
libbsd0.4.2-r0 ... 0.8.1-r0 (6 versions)0.8.2-r0—
Alpine:v3.4(1)
PackageVulnerable rangeFixed inDependents
libbsd0.4.2-r0 ... 0.8.1-r0 (6 versions)0.8.2—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libbsd—0.8.2-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libbsd—0.8.2-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libbsd—0.8.2-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libbsd—0.8.2-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
libbsd0.7.0-20.7.0-2+deb8u1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

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 4× in last 7d / 18× 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 157 total refreshes for this CVE.

  1. 2026-09-24 13:59 UTCEPSS rescore
  2. 2026-09-23 13:41 UTCEPSS rescore
  3. 2026-09-19 15:35 UTCEPSS rescore
  4. 2026-09-18 19:22 UTCEPSS rescore
  5. 2026-09-17 19:21 UTCEPSS rescore
  6. 2026-09-15 03:05 UTCEPSS rescore
  7. 2026-09-14 17:14 UTCOSV refresh
  8. 2026-09-13 16:41 UTCEPSS rescore
  9. 2026-09-12 14:55 UTCEPSS rescore
  10. 2026-09-10 09:26 UTCEPSS rescore
  11. 2026-09-07 15:56 UTCEPSS rescore
  12. 2026-09-04 13:56 UTCEPSS rescore
  13. 2026-09-02 14:07 UTCEPSS rescore
  14. 2026-09-01 03:31 UTCEPSS rescore
  15. 2026-08-30 19:12 UTCEPSS rescore
  16. 2026-08-27 14:20 UTCEPSS rescore
  17. 2026-08-26 17:16 UTCOSV refresh
  18. 2026-08-26 14:41 UTCEPSS rescore
  19. 2026-08-25 13:44 UTCEPSS rescore
  20. 2026-08-23 00:13 UTCEPSS rescore
  21. 2026-08-21 23:44 UTCEPSS rescore
  22. 2026-08-19 16:59 UTCEPSS rescore
  23. 2026-08-18 13:43 UTCEPSS rescore
  24. 2026-08-17 13:42 UTCEPSS rescore
  25. 2026-08-16 14:51 UTCEPSS rescore
Show 75 more
  1. 2026-08-16 02:09 UTCEPSS rescore
  2. 2026-08-15 01:25 UTCEPSS rescore
  3. 2026-08-12 13:46 UTCEPSS rescore
  4. 2026-08-11 13:36 UTCEPSS rescore
  5. 2026-08-10 07:09 UTCOSV refresh
  6. 2026-08-09 13:42 UTCEPSS rescore
  7. 2026-08-08 16:32 UTCEPSS rescore
  8. 2026-08-06 13:42 UTCEPSS rescore
  9. 2026-08-05 19:12 UTCEPSS rescore
  10. 2026-08-04 15:04 UTCEPSS rescore
  11. 2026-08-04 10:32 UTCEPSS rescore
  12. 2026-08-02 02:22 UTCEPSS rescore
  13. 2026-08-01 04:11 UTCEPSS rescore
  14. 2026-07-30 16:23 UTCEPSS rescore
  15. 2026-07-30 01:26 UTCEPSS rescore
  16. 2026-07-28 15:31 UTCEPSS rescore
  17. 2026-07-26 14:50 UTCEPSS rescore
  18. 2026-07-25 14:13 UTCEPSS rescore
  19. 2026-07-25 07:11 UTCOSV refresh
  20. 2026-07-23 14:14 UTCEPSS rescore
  21. 2026-07-23 01:22 UTCEG score recompute
  22. 2026-07-22 22:01 UTCEG score recompute
  23. 2026-07-22 14:04 UTCEPSS rescore
  24. 2026-07-21 15:21 UTCEPSS rescore
  25. 2026-07-21 15:21 UTCEPSS rescore
  26. 2026-07-20 17:03 UTCEPSS rescore
  27. 2026-07-19 14:27 UTCEPSS rescore
  28. 2026-07-19 02:26 UTCEPSS rescore
  29. 2026-07-19 02:26 UTCEPSS rescore
  30. 2026-07-18 10:00 UTCEPSS rescore
  31. 2026-07-18 10:00 UTCEPSS rescore
  32. 2026-07-16 16:59 UTCEPSS rescore
  33. 2026-07-16 16:59 UTCEPSS rescore
  34. 2026-07-15 16:54 UTCEPSS rescore
  35. 2026-07-15 16:54 UTCEPSS rescore
  36. 2026-07-15 01:56 UTCEPSS rescore
  37. 2026-07-15 01:56 UTCEPSS rescore
  38. 2026-07-13 22:26 UTCEPSS rescore
  39. 2026-07-12 05:43 UTCEPSS rescore
  40. 2026-07-12 05:43 UTCEPSS rescore
  41. 2026-07-11 08:23 UTCEPSS rescore
  42. 2026-07-09 19:05 UTCEPSS rescore
  43. 2026-07-08 15:10 UTCEPSS rescore
  44. 2026-07-08 02:05 UTCOSV refresh
  45. 2026-07-07 13:42 UTCEPSS rescore
  46. 2026-07-06 16:24 UTCEPSS rescore
  47. 2026-07-06 16:24 UTCEPSS rescore
  48. 2026-07-06 02:20 UTCEPSS rescore
  49. 2026-07-06 02:20 UTCEPSS rescore
  50. 2026-07-05 02:27 UTCEPSS rescore
  51. 2026-07-04 06:28 UTCEPSS rescore
  52. 2026-07-01 15:02 UTCEPSS rescore
  53. 2026-06-30 23:19 UTCEPSS rescore
  54. 2026-06-29 14:03 UTCEPSS rescore
  55. 2026-06-28 04:53 UTCEPSS rescore
  56. 2026-06-27 03:05 UTCEPSS rescore
  57. 2026-06-27 03:05 UTCEPSS rescore
  58. 2026-06-25 13:47 UTCEPSS rescore
  59. 2026-06-25 13:47 UTCEPSS rescore
  60. 2026-06-24 14:02 UTCEPSS rescore
  61. 2026-06-24 14:02 UTCEPSS rescore
  62. 2026-06-22 14:23 UTCEPSS rescore
  63. 2026-06-21 01:57 UTCEPSS rescore
  64. 2026-06-21 01:57 UTCEPSS rescore
  65. 2026-06-19 19:23 UTCEPSS rescore
  66. 2026-06-19 19:23 UTCEPSS rescore
  67. 2026-06-19 13:55 UTCOSV refresh
  68. 2026-06-18 17:50 UTCEPSS rescore
  69. 2026-06-17 17:50 UTCEPSS rescore
  70. 2026-06-17 17:50 UTCEPSS rescore
  71. 2026-06-16 17:50 UTCEPSS rescore
  72. 2026-06-16 17:50 UTCEPSS rescore
  73. 2026-06-15 17:45 UTCEPSS rescore
  74. 2026-06-14 23:14 UTCEPSS rescore
  75. 2026-06-13 22:57 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Same product

1 shown

Debian:11:libbsd

Same vendor

1 shown

ubuntu:USN-4243-1

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 June 17, 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 3% probability of exploitation in the next 30 days, which ranks it in the top 12.4% of all scored CVEs.
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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2016-2090

Explore →

Is Your Infrastructure Affected by CVE-2016-2090?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs