How severe is CVE-2023-21440?

CVE-2023-21440 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-21440 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-21440?

CVE-2023-21440 primarily affects Samsung Android. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-21440?

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

When was CVE-2023-21440 published?

CVE-2023-21440 was published on 2023-02-09 and last updated on 2026-06-17.

CVE-2023-21440

CVE-2023-21440 is a medium-severity vulnerability in Samsung Android with a CVSS 3.x base score of 6.2. 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-829.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-829
Affected product: Samsung Android
Published: 2023-02-09
Last modified: 2026-06-17

Description

Improper access control vulnerability in WindowManagerService prior to SMR Feb-2023 Release 1 allows attackers to take a screen capture.

Frequently asked questions

What is CVE-2023-21440?: Improper access control vulnerability in WindowManagerService prior to SMR Feb-2023 Release 1 allows attackers to take a screen capture.
How severe is CVE-2023-21440?: CVE-2023-21440 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-21440 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-21440?: CVE-2023-21440 primarily affects Samsung Android. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-21440?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-21440 published?: CVE-2023-21440 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 (15)

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-dec-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:13.0:smr-feb-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-nov-2023-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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