CVE Explorer
CVE-2026-23656
Insufficient verification of data authenticity in Windows App Installer allows an unauthorized attacker to perform spoofing over a network.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"Windows App Client for Windows Desktop","vendor":"Microsoft","versions":[{"lessThan":"2.0.964","status":"affected","version":"1.00","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:095770afdf0286f7cb87ce7892c776a07dd2010040352245f7ef65554401e17c · sha256:1b3fd7bca63d1ec9… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"baseScore":5.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:095770afdf0286f7cb87ce7892c776a07dd2010040352245f7ef65554401e17c · sha256:1b3fd7bca63d1ec9… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-345","description":"CWE-345: Insufficient Verification of Data Authenticity","lang":"en-US","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:095770afdf0286f7cb87ce7892c776a07dd2010040352245f7ef65554401e17c · sha256:1b3fd7bca63d1ec9… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"Windows App Installer Spoofing Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23656"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:095770afdf0286f7cb87ce7892c776a07dd2010040352245f7ef65554401e17c · sha256:1b3fd7bca63d1ec9… · /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.