CVE-2026-20449 (GCVE-0-2026-20449)
Vulnerability from cvelistv5
Published
2026-05-04 05:41
Modified
2026-05-04 12:59
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-120 - Classic Buffer Overflow
Summary
In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, 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: MOLY01760138; Issue ID: MSV-6148.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
Version: MT2735 Version: MT2737 Version: MT6739 Version: MT6761 Version: MT6762 Version: MT6763 Version: MT6765 Version: MT6767 Version: MT6768 Version: MT6769 Version: MT6771 Version: MT6779 Version: MT6781 Version: MT6783 Version: MT6785 Version: MT6789 Version: MT6813 Version: MT6815 Version: MT6833 Version: MT6835 Version: MT6853 Version: MT6855 Version: MT6858 Version: MT6873 Version: MT6875 Version: MT6877 Version: MT6878 Version: MT6879 Version: MT6880 Version: MT6883 Version: MT6885 Version: MT6886 Version: MT6889 Version: MT6890 Version: MT6891 Version: MT6893 Version: MT6895 Version: MT6896 Version: MT6897 Version: MT6899 Version: MT6980 Version: MT6983 Version: MT6985 Version: MT6986D Version: MT6988 Version: MT6989 Version: MT6990 Version: MT6991 Version: MT6993 Version: MT8668 Version: MT8673 Version: MT8675 Version: MT8676 Version: MT8678 Version: MT8755 Version: MT8771 Version: MT8775 Version: MT8791 Version: MT8791T Version: MT8792 Version: MT8793 Version: MT8795T Version: MT8797 Version: MT8798 Version: MT8863 Version: MT8873 Version: MT8883 Version: MT8893 |
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"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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{
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{
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{
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "MT6781"
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
"version": "MT6896"
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{
"status": "affected",
"version": "MT6897"
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{
"status": "affected",
"version": "MT6899"
},
{
"status": "affected",
"version": "MT6980"
},
{
"status": "affected",
"version": "MT6983"
},
{
"status": "affected",
"version": "MT6985"
},
{
"status": "affected",
"version": "MT6986D"
},
{
"status": "affected",
"version": "MT6988"
},
{
"status": "affected",
"version": "MT6989"
},
{
"status": "affected",
"version": "MT6990"
},
{
"status": "affected",
"version": "MT6991"
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{
"status": "affected",
"version": "MT6993"
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{
"status": "affected",
"version": "MT8668"
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{
"status": "affected",
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{
"status": "affected",
"version": "MT8675"
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
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{
"status": "affected",
"version": "MT8792"
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "MT8797"
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{
"status": "affected",
"version": "MT8798"
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{
"status": "affected",
"version": "MT8863"
},
{
"status": "affected",
"version": "MT8873"
},
{
"status": "affected",
"version": "MT8883"
},
{
"status": "affected",
"version": "MT8893"
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"descriptions": [
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"value": "In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, 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: MOLY01760138; Issue ID: MSV-6148."
}
],
"problemTypes": [
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"descriptions": [
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"description": "CWE-120 Classic Buffer Overflow",
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"providerMetadata": {
"dateUpdated": "2026-05-04T05:41:54.581Z",
"orgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374",
"shortName": "MediaTek"
},
"references": [
{
"url": "https://corp.mediatek.com/product-security-bulletin/May-2026"
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"cveId": "CVE-2026-20449",
"datePublished": "2026-05-04T05:41:54.581Z",
"dateReserved": "2025-11-03T01:30:59.013Z",
"dateUpdated": "2026-05-04T12:59:15.818Z",
"state": "PUBLISHED"
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"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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