FKIE_CVE-2026-20458
Vulnerability from fkie_nvd - Published: 2026-07-01 04:17 - Updated: 2026-07-02 05:16
Severity
Summary
In Modem, there is a possible memory corruption 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 not needed for exploitation. Patch ID: MOLY01402160; Issue ID: MSV-7298.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "MediaTek chipset",
"vendor": "MediaTek, Inc.",
"versions": [
{
"status": "affected",
"version": "MT2716"
},
{
"status": "affected",
"version": "MT2737"
},
{
"status": "affected",
"version": "MT6739"
},
{
"status": "affected",
"version": "MT6761"
},
{
"status": "affected",
"version": "MT6762"
},
{
"status": "affected",
"version": "MT6763"
},
{
"status": "affected",
"version": "MT6765"
},
{
"status": "affected",
"version": "MT6767"
},
{
"status": "affected",
"version": "MT6768"
},
{
"status": "affected",
"version": "MT6769"
},
{
"status": "affected",
"version": "MT6771"
},
{
"status": "affected",
"version": "MT6779"
},
{
"status": "affected",
"version": "MT6781"
},
{
"status": "affected",
"version": "MT6783"
},
{
"status": "affected",
"version": "MT6785"
},
{
"status": "affected",
"version": "MT6789"
},
{
"status": "affected",
"version": "MT6813"
},
{
"status": "affected",
"version": "MT6835"
},
{
"status": "affected",
"version": "MT6858"
},
{
"status": "affected",
"version": "MT6878"
},
{
"status": "affected",
"version": "MT6879"
},
{
"status": "affected",
"version": "MT6881"
},
{
"status": "affected",
"version": "MT6886"
},
{
"status": "affected",
"version": "MT6895"
},
{
"status": "affected",
"version": "MT6896"
},
{
"status": "affected",
"version": "MT6897"
},
{
"status": "affected",
"version": "MT6899"
},
{
"status": "affected",
"version": "MT6980"
},
{
"status": "affected",
"version": "MT6982"
},
{
"status": "affected",
"version": "MT6983"
},
{
"status": "affected",
"version": "MT6985"
},
{
"status": "affected",
"version": "MT6986"
},
{
"status": "affected",
"version": "MT6986D"
},
{
"status": "affected",
"version": "MT6988"
},
{
"status": "affected",
"version": "MT6989"
},
{
"status": "affected",
"version": "MT6990"
},
{
"status": "affected",
"version": "MT6991"
},
{
"status": "affected",
"version": "MT6993"
},
{
"status": "affected",
"version": "MT8666"
},
{
"status": "affected",
"version": "MT8667"
},
{
"status": "affected",
"version": "MT8668"
},
{
"status": "affected",
"version": "MT8673"
},
{
"status": "affected",
"version": "MT8676"
},
{
"status": "affected",
"version": "MT8678"
},
{
"status": "affected",
"version": "MT8755"
},
{
"status": "affected",
"version": "MT8765"
},
{
"status": "affected",
"version": "MT8766"
},
{
"status": "affected",
"version": "MT8766R"
},
{
"status": "affected",
"version": "MT8768"
},
{
"status": "affected",
"version": "MT8775"
},
{
"status": "affected",
"version": "MT8781"
},
{
"status": "affected",
"version": "MT8786"
},
{
"status": "affected",
"version": "MT8788"
},
{
"status": "affected",
"version": "MT8788E"
},
{
"status": "affected",
"version": "MT8789"
},
{
"status": "affected",
"version": "MT8792"
},
{
"status": "affected",
"version": "MT8793"
},
{
"status": "affected",
"version": "MT8795T"
},
{
"status": "affected",
"version": "MT8796"
},
{
"status": "affected",
"version": "MT8798"
},
{
"status": "affected",
"version": "MT8863"
},
{
"status": "affected",
"version": "MT8873"
},
{
"status": "affected",
"version": "MT8883"
},
{
"status": "affected",
"version": "MT8893"
}
]
}
],
"source": "security@mediatek.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In Modem, there is a possible memory corruption 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 not needed for exploitation. Patch ID: MOLY01402160; Issue ID: MSV-7298."
}
],
"id": "CVE-2026-20458",
"lastModified": "2026-07-02T05:16:40.093",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.6,
"impactScore": 5.9,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-20458",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-01T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-07-01T04:17:13.943",
"references": [
{
"source": "security@mediatek.com",
"url": "https://corp.mediatek.com/product-security-bulletin/July-2026"
}
],
"sourceIdentifier": "security@mediatek.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "security@mediatek.com",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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