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CVE-2026-47223

NanaZip is the 7-Zip derivative intended for the modern Windows experience. From version 3.0.1000.0 to before version 6.0.1698.0, a heap out-of-bounds read exists in the Android Verified Boot (AVB) vbmeta image parser in NanaZip (via the upstream 7-Zip AvbHandler). A 32-bit unsigned integer overflow in the bounds check pos + ht.salt_len > descSize allows an attacker-controlled salt_len field to bypass validation, causing CByteBuffer::CopyFrom to memcpy up to ~4 GiB past the end of a 64. This iss
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:41cafe9b09560d3b06b22eb309cce6e909a080540a119000563013f7b4d902e2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-190","description":"CWE-190: Integer Overflow or Wraparound","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f1d3078ada724fd4c90ec337b9c6eceed4b629bf0a9cbef2e9ee3be541963ffd · sha256:cfe6fa13a2024458… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f1d3078ada724fd4c90ec337b9c6eceed4b629bf0a9cbef2e9ee3be541963ffd · sha256:cfe6fa13a2024458… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"NanaZip","vendor":"M2Team","versions":[{"status":"affected","version":">= 3.0.1000.0, < 6.0.1698.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f1d3078ada724fd4c90ec337b9c6eceed4b629bf0a9cbef2e9ee3be541963ffd · sha256:cfe6fa13a2024458… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f1d3078ada724fd4c90ec337b9c6eceed4b629bf0a9cbef2e9ee3be541963ffd · sha256:cfe6fa13a2024458… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-190","description":"CWE-190: Integer Overflow or Wraparound","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f1d3078ada724fd4c90ec337b9c6eceed4b629bf0a9cbef2e9ee3be541963ffd · sha256:cfe6fa13a2024458… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f1d3078ada724fd4c90ec337b9c6eceed4b629bf0a9cbef2e9ee3be541963ffd · sha256:cfe6fa13a2024458… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/M2Team/NanaZip/security/advisories/GHSA-qhc5-mh6j-4g75"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f1d3078ada724fd4c90ec337b9c6eceed4b629bf0a9cbef2e9ee3be541963ffd · sha256:cfe6fa13a2024458… · /containers/adp/0/references/0
{"name":"https://github.com/M2Team/NanaZip/security/advisories/GHSA-qhc5-mh6j-4g75","tags":["x_refsource_CONFIRM"],"url":"https://github.com/M2Team/NanaZip/security/advisories/GHSA-qhc5-mh6j-4g75"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f1d3078ada724fd4c90ec337b9c6eceed4b629bf0a9cbef2e9ee3be541963ffd · sha256:cfe6fa13a2024458… · /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.

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