Samsung Devices libsaviextractor.so out-of-bounds write
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.4 | $0-$5k | 1.91+ |
Summary
A vulnerability identified as problematic has been detected in Samsung Devices. Impacted is an unknown function of the file libsaviextractor.so. Performing a manipulation results in out-of-bounds write. This vulnerability is identified as CVE-2026-21090. The attack is only possible with local access. There is not any exploit available.
Details
A vulnerability classified as problematic has been found in Samsung Devices (affected version not known). This affects some unknown functionality of the file libsaviextractor.so. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on integrity, and availability. The summary by CVE is:
Out-of-bounds write in libsaviextractor.so prior to SMR Sep-2026 Release 1 allows local attackers to write out-of-bounds memory.
It is possible to read the advisory at security.samsungmobile.com. This vulnerability is uniquely identified as CVE-2026-21090 since 12/11/2025. The exploitability is told to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-3219). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Affected
- Samsung Android
Product
Vendor
Name
License
Website
- Vendor: https://www.samsung.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 4.4VulDB Meta Temp Score: 4.4
VulDB Base Score: 4.4
VulDB Temp Score: 4.4
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Out-of-bounds writeCWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒
Physical: Partially
Local: Yes
Remote: No
Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
12/11/2025 CVE reserved09/09/2026 Advisory disclosed
09/09/2026 VulDB entry created
09/09/2026 VulDB entry last update
Sources
Vendor: samsung.comAdvisory: security.samsungmobile.com
Status: Confirmed
CVE: CVE-2026-21090 (🔒)
GCVE (CVE): GCVE-0-2026-21090
GCVE (VulDB): GCVE-100-401571
CERT Bund: WID-SEC-2026-3219 - Samsung Android: Mehrere Schwachstellen
Entry
Created: 09/09/2026 07:12Updated: 09/09/2026 09:27
Changes: 09/09/2026 07:12 (63), 09/09/2026 09:27 (7)
Complete: 🔍
Cache ID: 216::103
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
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