CVE-2023-21516

Name: CVE-2023-21516
Creator: NVD / NIST
Published: 2023-05-26T22:15:14.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2023-21516 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. XSS vulnerability from InstantPlay in Galaxy Store prior to version 4.5.49.8 allows attackers to execute javascript API to install APK from Galaxy Store.. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

XSS vulnerability from InstantPlay in Galaxy Store prior to version 4.5.49.8 allows attackers to execute javascript API to install APK from Galaxy Store.

Metrics

CVSS 3.1

9.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

0.55%

41.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Samsung	Galaxy Store	< 4.5.49.8

References

https://security.samsungmobile.com/serviceWeb.smsb?year=2023&month=01Vendor Advisory
https://security.samsungmobile.com/serviceWeb.smsb?year=2023&month=01Vendor Advisory

Timeline

Published: May 26, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-21516?

XSS vulnerability from InstantPlay in Galaxy Store prior to version 4.5.49.8 allows attackers to execute javascript API to install APK from Galaxy Store.

How severe is CVE-2023-21516?

CVE-2023-21516 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2023-21516?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-21516?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST