CVE-2020-19144

Buffer Overflow in LibTiff v4.0.10 allows attackers to cause a denial of service via the 'in _TIFFmemcpy' funtion in the component 'tif_unix.c'.

Published: 2021-09-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-19144 is rated Moderate Risk (54.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.51%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-19144

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 1.06% 1.51% +0.46%
2 2025-11-18 1.51% 1.06% -0.46%
3 2025-09-24 — 1.51% —

Full EPSS history (21 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-19144

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2020-19144

OS Trackers for CVE-2020-19144

vendor priority summary link
debian not yet assigned CVE-2020-19144 not yet assigned priority: Debian including 1 source packages (tiff), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-19144
redhat medium — https://access.redhat.com/security/cve/CVE-2020-19144
ubuntu negligible CVE-2020-19144 negligible priority: Ubuntu including 1 source packages (tiff), 8 status rows across 8 suites (bionic, focal, hirsute, impish, jammy, trusty, upstream, xenial): not-affected 4, released 4. https://ubuntu.com/security/CVE-2020-19144

Affected software / configurations for CVE-2020-19144

Vendor Product Version Raw CPE
simplesystems libtiff 4.0.10 cpe:2.3:a:simplesystems:libtiff:4.0.10:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
netapp ontap_select_deploy_administration_utility — cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*

References for CVE-2020-19144

URL Tags
http://bugzilla.maptools.org/show_bug.cgi?id=2852 Issue Tracking Third Party Advisory
https://gitlab.com/libtiff/libtiff/-/issues/159 Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00004.html Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20211004-0005/ Third Party Advisory
cvelogic Threat Intelligence