Medium 6.5Published Feb 9, 2019

CVE-2019-7663An Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c.

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

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It affects libtiff and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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An Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted tiff file. This is different from CVE-2018-12900.

CVSS: 6.5 MEDIUM (v3.0, NVD)CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

libtiff libtiff libtiff:libtiff	4.0.10	NVD
debian debian_linux debian:debian_linux	8.0	NVD
canonical ubuntu_linux canonical:ubuntu_linux	12.04; 14.04; 16.04; 18.04; 18.10	NVD
opensuse leap opensuse:leap	15.0	NVD

References

References

http://bugzilla.maptools.org/show_bug.cgi?id=2833	exploit, issue-tracking, patch, third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.html	mailing-list, third-party-advisory
https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2d39	patch, third-party-advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html	mailing-list, third-party-advisory
https://security.gentoo.org/glsa/202003-25
https://usn.ubuntu.com/3906-1/	third-party-advisory
https://usn.ubuntu.com/3906-2/	third-party-advisory
https://www.debian.org/security/2020/dsa-4670

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.