How severe is CVE-2023-20838?

CVE-2023-20838 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-20838 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20838?

CVE-2023-20838 primarily affects Linuxfoundation Yocto. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20838?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-20838 published?

CVE-2023-20838 was published on 2023-09-04 and last updated on 2026-06-17.

CVE-2023-20838

CVE-2023-20838 is a medium-severity vulnerability in Linuxfoundation Yocto with a CVSS 3.x base score of 4.0. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Linuxfoundation Yocto
Published: 2023-09-04
Last modified: 2026-06-17

Description

In imgsys, there is a possible out of bounds read due to a race condition. This could lead to local information disclosure with System execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS07326455; Issue ID: ALPS07326418.

Frequently asked questions

What is CVE-2023-20838?: In imgsys, there is a possible out of bounds read due to a race condition. This could lead to local information disclosure with System execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS07326455; Issue ID: ALPS07326418.
How severe is CVE-2023-20838?: CVE-2023-20838 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-20838 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-20838?: CVE-2023-20838 primarily affects Linuxfoundation Yocto. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-20838?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-20838 published?: CVE-2023-20838 was published on 2023-09-04 and last updated on 2026-06-17.

References

https://corp.mediatek.com/product-security-bulletin/September-2023

Affected products (6)

cpe:2.3:a:linuxfoundation:yocto:3.1:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:yocto:3.3:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:yocto:4.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:12.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.19:-:*:*:*:*:*:*

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