CVE Explorer
CVE-2026-21537
Improper control of generation of code ('code injection') in Microsoft Defender for Linux allows an unauthorized attacker to execute code over an adjacent network.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"Microsoft Defender for Endpoint for Linux","vendor":"Microsoft","versions":[{"lessThan":"1.0.9.0","status":"affected","version":"101.0.0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:03307a9775ffd593326eab6c43404d3f9f0d8f477dd0edeeaf505d9fdfd07766 · sha256:64327b6d13002364… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:03307a9775ffd593326eab6c43404d3f9f0d8f477dd0edeeaf505d9fdfd07766 · sha256:64327b6d13002364… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en-US","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:03307a9775ffd593326eab6c43404d3f9f0d8f477dd0edeeaf505d9fdfd07766 · sha256:64327b6d13002364… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21537"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:03307a9775ffd593326eab6c43404d3f9f0d8f477dd0edeeaf505d9fdfd07766 · sha256:64327b6d13002364… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.