How severe is CVE-2023-42535?

CVE-2023-42535 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-42535 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-42535?

CVE-2023-42535 primarily affects Samsung Android. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-42535?

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-2023-42535 published?

CVE-2023-42535 was published on 2023-11-07 and last updated on 2026-06-17.

CVE-2023-42535

CVE-2023-42535 is a high-severity vulnerability in Samsung Android with a CVSS 3.x base score of 8.4. 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 8.4)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Samsung Android
Published: 2023-11-07
Last modified: 2026-06-17

Description

Out-of-bounds Write in read_block of vold prior to SMR Nov-2023 Release 1 allows local attacker to execute arbitrary code.

Frequently asked questions

What is CVE-2023-42535?: Out-of-bounds Write in read_block of vold prior to SMR Nov-2023 Release 1 allows local attacker to execute arbitrary code.
How severe is CVE-2023-42535?: CVE-2023-42535 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-42535 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-42535?: CVE-2023-42535 primarily affects Samsung Android. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-42535?: 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-2023-42535 published?: CVE-2023-42535 was published on 2023-11-07 and last updated on 2026-06-17.

References

https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=11

Affected products (39)

cpe:2.3:o:samsung:android:12.0:-:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-apr-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-apr-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-aug-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-aug-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-dec-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-dec-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-feb-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-feb-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-jan-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-jan-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-jul-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-jul-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-jun-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-jun-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-mar-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-mar-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-may-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-may-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-nov-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-nov-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-oct-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-oct-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-sep-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:12.0:smr-sep-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:-:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-apr-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-aug-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-dec-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-feb-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-jan-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-jul-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-jun-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-mar-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-may-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-nov-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-oct-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-oct-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-sep-2023-r1:*:*:*:*:*:*

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