How severe is CVE-2022-33103?

CVE-2022-33103 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-33103 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-33103?

CVE-2022-33103 primarily affects Denx U-boot. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-33103?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-33103 published?

CVE-2022-33103 was published on 2022-07-01 and last updated on 2026-06-17.

CVE-2022-33103

CVE-2022-33103 is a high-severity vulnerability in Denx U-boot with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Denx U-boot
Published: 2022-07-01
Last modified: 2026-06-17

Description

Das U-Boot from v2020.10 to v2022.07-rc3 was discovered to contain an out-of-bounds write via the function sqfs_readdir().

Frequently asked questions

What is CVE-2022-33103?: Das U-Boot from v2020.10 to v2022.07-rc3 was discovered to contain an out-of-bounds write via the function sqfs_readdir().
How severe is CVE-2022-33103?: CVE-2022-33103 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-33103 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-33103?: CVE-2022-33103 primarily affects Denx U-boot. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-33103?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-33103 published?: CVE-2022-33103 was published on 2022-07-01 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*
cpe:2.3:a:denx:u-boot:2022.07:rc1:*:*:*:*:*:*
cpe:2.3:a:denx:u-boot:2022.07:rc2:*:*:*:*:*:*
cpe:2.3:a:denx:u-boot:2022.07:rc3:*:*:*:*:*:*

More vulnerabilities in Denx U-boot

CVE-2022-34835 — Critical (CVSS 9.8): In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer overflow in the "i2c…
CVE-2022-30767 — Critical (CVSS 9.8): nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded memcpy with a…
CVE-2020-8432 — Critical (CVSS 9.8): In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function. Double…
CVE-2019-14204 — Critical (CVSS 9.8): An issue was discovered in Das U-Boot through 2019.07. There is a stack-based buffer overflow in this nfs_handler reply…
CVE-2019-14203 — Critical (CVSS 9.8): An issue was discovered in Das U-Boot through 2019.07. There is a stack-based buffer overflow in this nfs_handler reply…
CVE-2019-14202 — Critical (CVSS 9.8): An issue was discovered in Das U-Boot through 2019.07. There is a stack-based buffer overflow in this nfs_handler reply…

All CVEs affecting Denx U-boot →

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