CVE-2022-33068

Exp

An integer overflow in the component hb-ot-shape-fallback.cc of Harfbuzz v4.3.0 allows attackers to cause a Denial of Service (DoS) via unspecified vectors.

Published: 2022-06-23 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-33068 is rated Exploit Available (57.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.94%). 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-2022-33068

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

Exploit prediction scoring system (EPSS) score for CVE-2022-33068

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 0.07% 0.94% +0.86%
2 2025-11-21 0.20% 0.07% -0.13%
3 2025-11-18 — 0.20% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-33068

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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: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.
 1.8 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-2022-33068

OS Trackers for CVE-2022-33068

vendor priority summary link
alpine medium CVE-2022-33068: 2 source package rows (harfbuzz, harfbuzz-stage0); 8 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 8, open 0. https://security.alpinelinux.org/vuln/CVE-2022-33068
debian not yet assigned CVE-2022-33068 not yet assigned priority: Debian including 1 source packages (harfbuzz), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. https://security-tracker.debian.org/tracker/CVE-2022-33068
gentoo high CVE-2022-33068: 1 GLSA(s) (202209-11), 1 atom(s) (media-libs/harfbuzz); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-33068
redhat medium — https://access.redhat.com/security/cve/CVE-2022-33068
suse high CVE-2022-33068 severity important: SUSE including 392 source package names (11-6.2:libharfbuzz0-3.4.0-150400.3.3.1, 11-7.1:libharfbuzz0-3.4.0-150400.3.3.1, …), 655 product×package rows across 115 product lines (Container bci/openjdk, Container bci/openjdk-devel, … (115 product lines)): Fixed 320, Known Affected 231, Known Not Affected 104. https://www.suse.com/security/cve/CVE-2022-33068/
ubuntu medium CVE-2022-33068 medium priority: Ubuntu including 13 source packages (harfbuzz, icedtea-web, …), 175 status rows across 14 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 76, not-affected 54, needs-triage 20, ignored 16, released 9. https://ubuntu.com/security/CVE-2022-33068

Affected software / configurations for CVE-2022-33068

Vendor Product Version Raw CPE
harfbuzz_project harfbuzz 4.3.0 cpe:2.3:a:harfbuzz_project:harfbuzz:4.3.0:*:*:*:*:*:*:*
fedoraproject fedora 35 cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
fedoraproject fedora 36 cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

References for CVE-2022-33068

cvelogic Threat Intelligence