CVE-2016-2090
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.21% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- fedoraproject/fedora · freedesktop/libbsd · debian/debian linux · canonical/ubuntu linux
- Source
- cve@mitre.org
EPSS 3.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2016/01/28/5Mailing List, Third Party Advisory
- https://blog.fuzzing-project.org/36-Heap-buffer-overflow-in-fgetwln-function-of-libbsd.htmlThird Party Advisory
- https://bugs.freedesktop.org/show_bug.cgi?id=93881Issue Tracking, Third Party Advisory
- https://cgit.freedesktop.org/libbsd/commit/?id=c8f0723d2b4520bdd6b9eb7c3e7976de726d7ff7Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/12/msg00036.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KJE5SPSX7HEKLZ34LUTZLXWPEL2K353/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIQKQ42Z7553D46QY3IMIQKS52QTNIHY/
- https://security.gentoo.org/glsa/201607-13Third Party Advisory
- https://usn.ubuntu.com/4243-1/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/28/5Mailing List, Third Party Advisory
- https://blog.fuzzing-project.org/36-Heap-buffer-overflow-in-fgetwln-function-of-libbsd.htmlThird Party Advisory
- https://bugs.freedesktop.org/show_bug.cgi?id=93881Issue Tracking, Third Party Advisory
- https://cgit.freedesktop.org/libbsd/commit/?id=c8f0723d2b4520bdd6b9eb7c3e7976de726d7ff7Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/12/msg00036.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KJE5SPSX7HEKLZ34LUTZLXWPEL2K353/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIQKQ42Z7553D46QY3IMIQKS52QTNIHY/
- https://security.gentoo.org/glsa/201607-13Third Party Advisory
- https://usn.ubuntu.com/4243-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.