Out-of-bounds write in libsthmbc.so prior to One UI 8.5 allows local attackers to write out-of-bounds memory. (CVE-2026-21111)
CVE-2026-21111 is an out-of-bounds write vulnerability in the libsthmbc.so library affecting versions prior to One UI 8.5. This flaw allows local attackers to write outside the intended memory boundaries. The vulnerability has a moderate severity rating. No known exploits in the wild or patch information are currently available.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds write in the libsthmbc.so component found in One UI versions before 8.5. Local attackers with limited privileges can exploit this flaw to write to memory locations beyond allocated buffers, potentially leading to memory corruption. The CVSS 4.0 vector indicates local attack vector with low complexity and no user interaction required, but with moderate impact on confidentiality and integrity. There is no public information on patches or vendor advisories at this time.
Potential Impact
The vulnerability allows local attackers to write out-of-bounds memory, which can lead to memory corruption. This may affect system stability or security depending on how the corrupted memory is used. The severity is moderate, indicating a limited but meaningful risk if exploited locally.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local access to trusted users only to reduce risk.
Out-of-bounds write in libsthmbc.so prior to One UI 8.5 allows local attackers to write out-of-bounds memory. (CVE-2026-21111)
Description
CVE-2026-21111 is an out-of-bounds write vulnerability in the libsthmbc.so library affecting versions prior to One UI 8.5. This flaw allows local attackers to write outside the intended memory boundaries. The vulnerability has a moderate severity rating. No known exploits in the wild or patch information are currently available.
CVSS v4.0
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds write in the libsthmbc.so component found in One UI versions before 8.5. Local attackers with limited privileges can exploit this flaw to write to memory locations beyond allocated buffers, potentially leading to memory corruption. The CVSS 4.0 vector indicates local attack vector with low complexity and no user interaction required, but with moderate impact on confidentiality and integrity. There is no public information on patches or vendor advisories at this time.
Potential Impact
The vulnerability allows local attackers to write out-of-bounds memory, which can lead to memory corruption. This may affect system stability or security depending on how the corrupted memory is used. The severity is moderate, indicating a limited but meaningful risk if exploited locally.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local access to trusted users only to reduce risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-x69q-4h23-g7jv
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-21111"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 4.0
Threat ID: 6aa15f79acd9273b4961830f
Added to database: 09/09/2026, 13:30:33 UTC
Last enriched: 09/09/2026, 13:55:37 UTC
Last updated: 09/09/2026, 22:52:09 UTC
Views: 3
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