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CVE-2022-1623

21
FAUCET Score

CVE-2022-1623 is an out-of-bounds read vulnerability in the LZWDecode function of LibTIFF's master branch (libtiff/tif_lzw.c:624), affecting products like Debian, Fedora, and NetApp. This medium-severity vulnerability (CVSS 5.5) can be triggered by a crafted TIFF file, requiring user interaction and local access, leading to a denial-of-service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage. A fix is available for those compiling LibTIFF from source via commit b4e79bfa.

Impacted Technologies

VendorProductVersion(s)CPE
4.3.0CPE matchmatch criteria
cpe:2.3:a:libtiff:libtiff:4.3.0:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
36CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.22%
Probability of exploitation in next 30 days
EPSS Percentile
65.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0122 is in the 76th percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia msrc
Product: 19487-16823Fixed in: 4.4.0-1
microsoftpatch availablevia msrc
Product: cbl2 libtiff 4.4.0-1 on CBL Mariner 2.0Fixed in: 4.4.0-1

Vendor Advisories (2)

redhatCVE-2022-1623Low

libtiff: out-of-bounds read in LZWDecode

May 11, 2022
microsoft2022-May/CVE-2022-1623Moderate

LibTIFF master branch has an out-of-bounds read in LZWDecode in libtiff/tif_lzw.c:624 allowing attackers to cause a denial-of-service via a crafted tiff file. For users that compile libtiff from sources the fix is available with commit b4e79bfa.

May 10, 2022

References

gitlab.com / gitlab-org/cves/-/blob/master/2022/CVE-2022-1623.json
Third Party Advisory
gitlab.com / libtiff/libtiff/-/commit/b4e79bfa0c7d2d08f6f1e7ec38143fc8cb11394a
PatchThird Party Advisory
gitlab.com / libtiff/libtiff/-/issues/410
ExploitThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/C7IWZTB4J2N4F5OR5QY4VHDSKWKZSWN3
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UXAFOP6QQRNZD3HPZ6BMCEZZOM4YIZMK
security.gentoo.org / glsa/202210-10
Third Party Advisory
security.netapp.com / advisory/ntap-20220616-0005
Third Party Advisory
debian.org / security/2023/dsa-5333
Third Party Advisory