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Fencer Intel
high 8.8

CVE-2016-3621 json

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote atta…

published 2016-10-03 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-4647

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image.

Patch / fix

  • tiff Debian 14, Debian 13, Debian 12 4.0.6-3

debian advisories DEBIAN-CVE-2016-3621

  • tiff SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 3.8.2-141.169.22.1

suse advisories SUSE-SU-2018:3879-1

  • tiff Alpine 3.4, Alpine 3.3, Alpine 3.2 4.0.7-r0

alpine advisories ALPINE-CVE-2016-3621

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libtiff Arch Linux 4.0.7-1
  • lib32-libtiff Arch Linux 4.0.7-1

arch linux advisories AVG-85AVG-86

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-2016-3621 updated cvss 4.3

libtiff: out of bounds read in the bmp2tiff tool

  • Red Hat Enterprise Linux 5 libtiff
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 6 libtiff Red Hat Enterprise Linux 7 libtiff, libtiff-tools, compat-libtiff3
    not affected: vulnerable code not present

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

2.07% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Intel 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.