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CVE-2026-20433

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01088681; Issue ID: MSV-4460.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:dd9fb9ad18ac2b21fa3c74effa20537faf605a48f97baed1d1557f0d7164ca46
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"MediaTek chipset","vendor":"MediaTek, Inc.","versions":[{"status":"affected","version":"MT2735"},{"status":"affected","version":"MT2737"},{"status":"affected","version":"MT6813"},{"status":"affected","version":"MT6833"},{"status":"affected","version":"MT6833P"},{"status":"affected","version":"MT6835"},{"status":"affected","version":"MT6835T"},{"status":"affected","version":"MT6853"},{"status":"affected","version":"MT6853T"},{"status":"affected","version":"MT6855"},{"status":"affected","version":"MT6855T"},{"status":"affected","version":"MT6873"},{"statu…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8a8bbf013c41015c1359a53d49c845c0be4b4ceae416ea16538a990ba8f1a50f · sha256:33277b2440743ef0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8a8bbf013c41015c1359a53d49c845c0be4b4ceae416ea16538a990ba8f1a50f · sha256:33277b2440743ef0… · /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:v2:8a8bbf013c41015c1359a53d49c845c0be4b4ceae416ea16538a990ba8f1a50f · sha256:33277b2440743ef0… · /containers/adp/0/problemTypes/0/descriptions/0
{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8a8bbf013c41015c1359a53d49c845c0be4b4ceae416ea16538a990ba8f1a50f · sha256:33277b2440743ef0… · /containers/cna/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:v2:8a8bbf013c41015c1359a53d49c845c0be4b4ceae416ea16538a990ba8f1a50f · sha256:33277b2440743ef0… · /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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