How severe is CVE-2023-21436?

CVE-2023-21436 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-21436 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-21436?

CVE-2023-21436 primarily affects Samsung Android. In total, 128 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-21436?

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

When was CVE-2023-21436 published?

CVE-2023-21436 was published on 2023-02-09 and last updated on 2026-06-17.

CVE-2023-21436

CVE-2023-21436 is a low-severity vulnerability in Samsung Android with a CVSS 3.x base score of 3.3. 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-285.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-285
Affected product: Samsung Android
Published: 2023-02-09
Last modified: 2026-06-17

Description

Improper usage of implicit intent in Contacts prior to SMR Feb-2023 Release 1 allows attacker to get account ID.

Frequently asked questions

What is CVE-2023-21436?: Improper usage of implicit intent in Contacts prior to SMR Feb-2023 Release 1 allows attacker to get account ID.
How severe is CVE-2023-21436?: CVE-2023-21436 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-21436 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-21436?: CVE-2023-21436 primarily affects Samsung Android. In total, 128 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-21436?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-21436 published?: CVE-2023-21436 was published on 2023-02-09 and last updated on 2026-06-17.

References

https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=02

Affected products (128)

cpe:2.3:o:samsung:android:10.0:-:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-apr-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-apr-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-apr-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-apr-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-aug-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-aug-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-aug-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-aug-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-dec-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-dec-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-dec-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-dec-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-dec-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-feb-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-feb-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-feb-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-feb-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jan-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jan-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jan-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jul-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jul-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jul-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jul-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jun-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jun-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jun-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jun-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-mar-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-mar-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-mar-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-mar-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-may-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-may-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-may-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-may-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-nov-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-nov-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-nov-2021-r1:*:*:*:*:*:*

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