CVE-2022-4645

Exp

LibTIFF 4.4.0 has an out-of-bounds read in tiffcp in tools/tiffcp.c:948, 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 e8131125.

Published: 2023-03-03 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-4645 is rated Exploit Available (54.4/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.43%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2022-4645

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-4645

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 2026-06-15 0.02% 0.43% +0.41%
2 2025-11-21 0.07% 0.02% -0.06%
3 2025-11-18 — 0.07% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-4645

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
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.
 2.5 4.2 [email protected]
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
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.
 1.8 3.6 [email protected]

Weakness enumeration for CVE-2022-4645

OS Trackers for CVE-2022-4645

vendor priority summary link
alpine — CVE-2022-4645: 1 source package rows (tiff); 1 state rows across 1 repos (3.17-main); fixed 1, open 0. https://security.alpinelinux.org/vuln/CVE-2022-4645
debian not yet assigned CVE-2022-4645 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-2022-4645
redhat medium — https://access.redhat.com/security/cve/CVE-2022-4645
suse medium CVE-2022-4645 severity moderate: SUSE including 10 source package names (libtiff-4.0.9-31.el8, libtiff-4.4.0-7.el9, …), 107 product×package rows across 37 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 7, … (37 product lines)): Known Not Affected 101, Fixed 6. https://www.suse.com/security/cve/CVE-2022-4645/
ubuntu medium CVE-2022-4645 medium priority: Ubuntu including 1 source packages (tiff), 8 status rows across 8 suites (bionic, focal, jammy, kinetic, lunar, trusty, upstream, xenial): released 6, needs-triage 1, not-affected 1. https://ubuntu.com/security/CVE-2022-4645

NVD evaluator notes for CVE-2022-4645

Comment: n

Affected software / configurations for CVE-2022-4645

Vendor Product Version Raw CPE
fedoraproject fedora 36 cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
fedoraproject fedora 37 cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
fedoraproject fedora 38 cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
libtiff libtiff >= 3.5.1, <= 4.4.0 cpe:2.3:a:libtiff:libtiff:*:*:*:*:*:*:*:*

References for CVE-2022-4645

URL Tags
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-4645.json Third Party Advisory
https://gitlab.com/libtiff/libtiff/-/commit/e813112545942107551433d61afd16ac094ff246 Patch
https://gitlab.com/libtiff/libtiff/-/issues/277 Exploit Issue Tracking Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ZTFA6GGOKFPIQNHDBMXYUR4XUXUJESE/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BA6GRCAQ7NR2OK5N44UQRGUJBIYKWJJH/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OLM763GGZVVOAXIQXG6YGTYJ5VFYNECQ/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20230331-0001/ Third Party Advisory
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