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CVE-2026-20446

In sec boot, there is a possible out of bounds write due to an integer overflow. This could lead to local denial of service, if an attacker has physical access to the device, with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS09963054; Issue ID: MSV-3899.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:589fcba539d6c060f2bf3398f83d0862ca18e975961b71fc53fbef92262b5bbb
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-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6a0f324498790170a0ec62a8c0a90754db64305939c4d39c24b05eb5cb5d8c1e · sha256:916113a7f25f1d9d… · /containers/cna/problemTypes/0/descriptions/0

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

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6a0f324498790170a0ec62a8c0a90754db64305939c4d39c24b05eb5cb5d8c1e · sha256:916113a7f25f1d9d… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"MediaTek chipset","vendor":"MediaTek, Inc.","versions":[{"status":"affected","version":"MT6813"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6a0f324498790170a0ec62a8c0a90754db64305939c4d39c24b05eb5cb5d8c1e · sha256:916113a7f25f1d9d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"PHYSICAL","availabilityImpact":"HIGH","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6a0f324498790170a0ec62a8c0a90754db64305939c4d39c24b05eb5cb5d8c1e · sha256:916113a7f25f1d9d… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6a0f324498790170a0ec62a8c0a90754db64305939c4d39c24b05eb5cb5d8c1e · sha256:916113a7f25f1d9d… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-190","description":"CWE-190 Integer Overflow or Wraparound","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6a0f324498790170a0ec62a8c0a90754db64305939c4d39c24b05eb5cb5d8c1e · sha256:916113a7f25f1d9d… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://corp.mediatek.com/product-security-bulletin/April-2026"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6a0f324498790170a0ec62a8c0a90754db64305939c4d39c24b05eb5cb5d8c1e · sha256:916113a7f25f1d9d… · /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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