Improper input validation in libcodec2_sec_flacdec.so prior to SMR Aug-2026 Release 1 allows local attackers to write out-of-bounds memory. (CVE-2026-21066)
CVE-2026-21066 is a vulnerability in libcodec2_sec_flacdec.so prior to SMR Aug-2026 Release 1 where improper input validation allows local attackers to write out-of-bounds memory. This can lead to high impact on confidentiality, integrity, and availability. The vulnerability requires local access and low complexity to exploit, with no user interaction needed.
AI Analysis
Technical Summary
The vulnerability CVE-2026-21066 involves improper input validation in the libcodec2_sec_flacdec.so component before SMR Aug-2026 Release 1. This flaw enables local attackers with low privileges to perform out-of-bounds memory writes, potentially compromising system confidentiality, integrity, and availability. The CVSS 3.1 base score is 7.8, reflecting a high impact with local attack vector, low attack complexity, and no user interaction required. No specific affected versions are provided, and no patch links are available at this time.
Potential Impact
Successful exploitation allows local attackers to write out-of-bounds memory, which can lead to arbitrary code execution, data corruption, or system crashes. The CVSS score indicates high impact on confidentiality, integrity, and availability. However, exploitation requires local access and low privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links are provided, monitor vendor communications for updates and apply the SMR Aug-2026 Release 1 or later once available.
Improper input validation in libcodec2_sec_flacdec.so prior to SMR Aug-2026 Release 1 allows local attackers to write out-of-bounds memory. (CVE-2026-21066)
Description
CVE-2026-21066 is a vulnerability in libcodec2_sec_flacdec.so prior to SMR Aug-2026 Release 1 where improper input validation allows local attackers to write out-of-bounds memory. This can lead to high impact on confidentiality, integrity, and availability. The vulnerability requires local access and low complexity to exploit, with no user interaction needed.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-21066 involves improper input validation in the libcodec2_sec_flacdec.so component before SMR Aug-2026 Release 1. This flaw enables local attackers with low privileges to perform out-of-bounds memory writes, potentially compromising system confidentiality, integrity, and availability. The CVSS 3.1 base score is 7.8, reflecting a high impact with local attack vector, low attack complexity, and no user interaction required. No specific affected versions are provided, and no patch links are available at this time.
Potential Impact
Successful exploitation allows local attackers to write out-of-bounds memory, which can lead to arbitrary code execution, data corruption, or system crashes. The CVSS score indicates high impact on confidentiality, integrity, and availability. However, exploitation requires local access and low privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links are provided, monitor vendor communications for updates and apply the SMR Aug-2026 Release 1 or later once available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-qr93-xw8j-6gx7
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-21066"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a79f0dfbf8831d539f61f86
Added to database: 08/10/2026, 15:40:15 UTC
Last enriched: 08/19/2026, 16:24:51 UTC
Last updated: 09/23/2026, 01:47:41 UTC
Views: 24
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