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CVE-2025-21043

75
FAUCET Score

CVE-2025-21043 is a critical out-of-bounds write vulnerability in the libimagecodec.quram.so component of Samsung Android devices, allowing remote attackers to execute arbitrary code. With a CVSS score of 9.8, it poses a severe risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. This vulnerability is actively exploited in the wild, as confirmed by its presence in CISA's KEV catalog, and has garnered significant community discussion and media coverage, despite a lack of public exploit code on platforms like Metasploit or ExploitDB.

Impacted Technologies

VendorProductVersion(s)CPE
13.0CPE matchmatch criteria
cpe:2.3:o:samsung:android:13.0:-:*:*:*:*:*:*
13.0CPE matchmatch criteria
cpe:2.3:o:samsung:android:13.0:smr-apr-2022-r1:*:*:*:*:*:*
13.0CPE matchmatch criteria
cpe:2.3:o:samsung:android:13.0:smr-apr-2023-r1:*:*:*:*:*:*
13.0CPE matchmatch criteria
cpe:2.3:o:samsung:android:13.0:smr-apr-2024-r1:*:*:*:*:*:*
13.0CPE matchmatch criteria
cpe:2.3:o:samsung:android:13.0:smr-apr-2025-r1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.90%
Probability of exploitation in next 30 days
EPSS Percentile
77.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Oct 2, 2025
This CVE's current EPSS score of 0.0190 is in the 66th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
security.samsungmobile.com / securityUpdate.smsb
Vendor Advisory