CVE-2022-33103 [High] | Out-of-bounds Write in U-Boot

CVE-2022-33103 is rated Moderate Risk (43.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.44%). Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.11%	0.44%	+0.33%
2	2025-12-08	0.05%	0.11%	+0.06%
3	2025-11-21	—	0.05%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.11%

0.44%

+0.33%

2025-12-08

0.05%

0.11%

+0.06%

2025-11-21

—

0.05%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	[email protected]
4.6	2.0	MEDIUM	`AV:L/AC:L/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:L) Requires local access to the target system. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	3.9	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

5.9

[email protected]

4.6

2.0

MEDIUM

AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand

Access vector (AV:L): Requires local access to the target system.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

3.9

6.4

[email protected]

OS Trackers for CVE-2022-33103

vendor	priority	summary	link
`alpine`	—	CVE-2022-33103: 1 source package rows (u-boot); 8 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 8.	https://security.alpinelinux.org/vuln/CVE-2022-33103
`debian`	not yet assigned	CVE-2022-33103 not yet assigned priority: Debian including 1 source packages (u-boot), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2022-33103
`suse`	high	CVE-2022-33103 severity important: SUSE including 173 source package names (u-boot, u-boot-avnetultra96rev1-2021.01-150300.7.18.1, …), 315 product×package rows across 38 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (38 product lines)): Fixed 263, Known Not Affected 52.	https://www.suse.com/security/cve/CVE-2022-33103/
`ubuntu`	medium	CVE-2022-33103 medium priority: Ubuntu including 1 source packages (u-boot), 14 status rows across 14 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 7, released 3, DNE 1, ignored 1, needed 1, needs-triage 1.	https://ubuntu.com/security/CVE-2022-33103

Affected software / configurations for CVE-2022-33103

Vendor	Product	Version	Raw CPE
denx	u-boot	>= 2020.10, < 2022.07	cpe:2.3:a:denx:u-boot::::::::
denx	u-boot	2022.07	cpe:2.3:a:denx:u-boot:2022.07:rc1::::::
denx	u-boot	2022.07	cpe:2.3:a:denx:u-boot:2022.07:rc2::::::
denx	u-boot	2022.07	cpe:2.3:a:denx:u-boot:2022.07:rc3::::::

References for CVE-2022-33103

URL	Tags
https://lore.kernel.org/all/20220609140206.297405-1-miquel.raynal%40bootlin.com/
https://lore.kernel.org/all/CALO=DHFB+yBoXxVr5KcsK0iFdg+e7ywko4-e+72kjbcS8JBfPw%40mail.gmail.com/
https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html

URL

CVE-2022-33103

Exploit prediction scoring system (EPSS) score for CVE-2022-33103

Common vulnerability scoring system (CVSS) metrics for CVE-2022-33103

Weakness enumeration for CVE-2022-33103

OS Trackers for CVE-2022-33103

Affected software / configurations for CVE-2022-33103

References for CVE-2022-33103