Medium 6.5Published Aug 14, 2019

CVE-2019-14973_TIFFCheckMalloc and _TIFFCheckRealloc in tif_aux.c in LibTIFF through 4.0.10 mishandle Integer Overflow checks because they rely on compiler behavior that is undefined by the applicable C standards.

Updated under an hour ago (Nov 2, 2026, 1:40 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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_TIFFCheckMalloc and _TIFFCheckRealloc in tif_aux.c in LibTIFF through 4.0.10 mishandle Integer Overflow checks because they rely on compiler behavior that is undefined by the applicable C standards. This can, for example, lead to an application crash.

CVSS: 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-190
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	through 4.0.10	NVD
debian debian_linux debian:debian_linux	8.0; 9.0; 10.0	NVD
fedoraproject fedora fedoraproject:fedora	30; 31	NVD
opensuse leap opensuse:leap	15.1; 15.2	NVD

References

References

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00102.html	mailing-list, third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00023.html	mailing-list, third-party-advisory
http://packetstormsecurity.com/files/155095/Slackware-Security-Advisory-libtiff-Updates.html	third-party-advisory, vdb-entry
https://gitlab.com/libtiff/libtiff/merge_requests/90	patch, third-party-advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00031.html	mailing-list, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/63BVT6N5KQPHWOWM4B3I7Z3ODBXUVNPS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ADNPG7JJTRRK22GUVTAFH3GJ6WGKUZJB/
https://seclists.org/bugtraq/2019/Nov/5	mailing-list, third-party-advisory
https://seclists.org/bugtraq/2020/Jan/32	mailing-list, third-party-advisory
https://www.debian.org/security/2020/dsa-4608	third-party-advisory
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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.