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CVE-2026-3665

A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsx_consumer::read_office_document of the file source/detail/serialization/xlsx_consumer.cpp of the component XLSX File Parser. The manipulation leads to null pointer dereference. The attack must be carried out locally. The exploit is publicly available and might be used.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a19f0ad094caef8b6b3530a01af46dcc7a5c8166597fdf3339678eb208a73ab4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":4.8,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/metrics/2/cvssV3_0
cwe · 2 assertions

{"cweId":"CWE-476","description":"NULL Pointer Dereference","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-404","description":"Denial of Service","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"modules":["XLSX File Parser"],"product":"xlnt","vendor":"xlnt-community","versions":[{"status":"affected","version":"1.6.0"},{"status":"affected","version":"1.6.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":4.8,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/metrics/2/cvssV3_0

CWE assertions

2 source assertions
{"cweId":"CWE-476","description":"NULL Pointer Dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-404","description":"Denial of Service","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/problemTypes/1/descriptions/0

Source references

6 source assertions
{"tags":["exploit"],"url":"https://github.com/oneafter/0128/blob/main/xl4/repro"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/references/4
{"tags":["product"],"url":"https://github.com/xlnt-community/xlnt/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/references/5
{"tags":["issue-tracking"],"url":"https://github.com/xlnt-community/xlnt/issues/140"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/references/3
{"name":"VDB-349554 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/?ctiid.349554"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/references/1
{"name":"VDB-349554 | xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/?id.349554"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/references/0
{"name":"Submit #764647 | xlnt-community xlnt commit bceb706 and before NULL Pointer Dereference","tags":["third-party-advisory"],"url":"https://vuldb.com/?submit.764647"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:da624cc3f86d29f545af592a025cbfdd9e6f05f58b024cbf201dc444fbe9c5c7 · sha256:df041a5216a06786… · /containers/cna/references/2

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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