How severe is CVE-2023-20733?

CVE-2023-20733 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-20733 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-2023-20733?

CVE-2023-20733 primarily affects Linuxfoundation Iot-yocto. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20733?

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

When was CVE-2023-20733 published?

CVE-2023-20733 was published on 2023-06-06 and last updated on 2026-06-17.

CVE-2023-20733

CVE-2023-20733 is a medium-severity vulnerability in Linuxfoundation Iot-yocto with a CVSS 3.x base score of 6.7. 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-667.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-667
Affected product: Linuxfoundation Iot-yocto
Published: 2023-06-06
Last modified: 2026-06-17

Description

In vcu, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07645149; Issue ID: ALPS07645149.

Frequently asked questions

What is CVE-2023-20733?: In vcu, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07645149; Issue ID: ALPS07645149.
How severe is CVE-2023-20733?: CVE-2023-20733 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-20733 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-2023-20733?: CVE-2023-20733 primarily affects Linuxfoundation Iot-yocto. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-20733?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-20733 published?: CVE-2023-20733 was published on 2023-06-06 and last updated on 2026-06-17.

References

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

Affected products (4)

cpe:2.3:a:linuxfoundation:iot-yocto:22.2:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:yocto:4.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:12.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*

More vulnerabilities in Linuxfoundation Iot-yocto

CVE-2023-20746 — Medium (CVSS 6.7): In vcu, there is a possible out of bounds write due to improper locking. This could lead to local escalation of…
CVE-2023-20745 — Medium (CVSS 6.7): In vcu, there is a possible out of bounds write due to improper locking. This could lead to local escalation of…
CVE-2023-20744 — Medium (CVSS 6.7): In vcu, there is a possible use after free due to a logic error. This could lead to local escalation of privilege with…
CVE-2023-20743 — Medium (CVSS 6.7): In vcu, there is a possible out of bounds write due to improper locking. This could lead to local escalation of…
CVE-2023-20740 — Medium (CVSS 6.7): In vcu, there is a possible memory corruption due to a logic error. This could lead to local escalation of privilege…
CVE-2023-20738 — Medium (CVSS 6.7): In vcu, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of…

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Other CWE-667 (Improper Locking) vulnerabilities

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CVE-2026-43215 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: cifs: Fix locking usage for tcon fields We used…
CVE-2026-31629 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: add missing return after LLCP_CLOSED…
CVE-2020-15674 — High (CVSS 8.8): Mozilla developers reported memory safety bugs present in Firefox 80. Some of these bugs showed evidence of memory…
CVE-2021-1622 — High (CVSS 8.6): A vulnerability in the Common Open Policy Service (COPS) of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband…

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