CVE-2026-20422 (GCVE-0-2026-20422)
Vulnerability from cvelistv5 – Published: 2026-02-02 08:14 – Updated: 2026-03-30 13:02
VLAI
EPSS
VEX
Summary
In Modem, there is a possible system crash due to improper input validation. 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: MOLY00827332; Issue ID: MSV-5919.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 14:15 UTC
CWE
- CWE-617 - Reachable Assertion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
Affected:
MT2735
Affected: MT2737 Affected: MT6813 Affected: MT6815 Affected: MT6833 Affected: MT6835 Affected: MT6853 Affected: MT6855 Affected: MT6858 Affected: MT6873 Affected: MT6875 Affected: MT6877 Affected: MT6878 Affected: MT6879 Affected: MT6880 Affected: MT6883 Affected: MT6885 Affected: MT6886 Affected: MT6889 Affected: MT6890 Affected: MT6891 Affected: MT6893 Affected: MT6895 Affected: MT6896 Affected: MT6897 Affected: MT6899 Affected: MT6980 Affected: MT6983 Affected: MT6985 Affected: MT6986 Affected: MT6989 Affected: MT6990 Affected: MT6991 Affected: MT6993 Affected: MT8668 Affected: MT8673 Affected: MT8675 Affected: MT8676 Affected: MT8678 Affected: MT8755 Affected: MT8771 Affected: MT8775 Affected: MT8791 Affected: MT8791T Affected: MT8792 Affected: MT8793 Affected: MT8795T Affected: MT8797 Affected: MT8798 Affected: MT8863 Affected: MT8873 Affected: MT8883 Affected: MT8893 |
guessed |
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"redhat_vex": {
"current_release_date": "2026-02-03T09:18:28+00:00",
"cve": "CVE-2026-20422",
"id": "CVE-2026-20422",
"initial_release_date": "2026-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CVE-2026-20422",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20422.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20422\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-02-17T14:15:42.769658Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-02-02T21:20:56.978Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"MediaTek, Inc.\", \"product\": \"MediaTek chipset\", \"versions\": [{\"status\": \"affected\", \"version\": \"MT2735\"}, {\"status\": \"affected\", \"version\": \"MT2737\"}, {\"status\": \"affected\", \"version\": \"MT6813\"}, {\"status\": \"affected\", \"version\": \"MT6815\"}, {\"status\": \"affected\", \"version\": \"MT6833\"}, {\"status\": \"affected\", \"version\": \"MT6835\"}, {\"status\": \"affected\", \"version\": \"MT6853\"}, {\"status\": \"affected\", \"version\": \"MT6855\"}, {\"status\": \"affected\", \"version\": \"MT6858\"}, {\"status\": \"affected\", \"version\": \"MT6873\"}, {\"status\": \"affected\", \"version\": \"MT6875\"}, {\"status\": \"affected\", \"version\": \"MT6877\"}, {\"status\": \"affected\", \"version\": \"MT6878\"}, {\"status\": \"affected\", \"version\": \"MT6879\"}, {\"status\": \"affected\", \"version\": \"MT6880\"}, {\"status\": \"affected\", \"version\": \"MT6883\"}, {\"status\": \"affected\", \"version\": \"MT6885\"}, {\"status\": \"affected\", \"version\": \"MT6886\"}, {\"status\": \"affected\", \"version\": \"MT6889\"}, {\"status\": \"affected\", \"version\": \"MT6890\"}, {\"status\": \"affected\", \"version\": \"MT6891\"}, {\"status\": \"affected\", \"version\": \"MT6893\"}, {\"status\": \"affected\", \"version\": \"MT6895\"}, {\"status\": \"affected\", \"version\": \"MT6896\"}, {\"status\": \"affected\", \"version\": \"MT6897\"}, {\"status\": \"affected\", \"version\": \"MT6899\"}, {\"status\": \"affected\", \"version\": \"MT6980\"}, {\"status\": \"affected\", \"version\": \"MT6983\"}, {\"status\": \"affected\", \"version\": \"MT6985\"}, {\"status\": \"affected\", \"version\": \"MT6986\"}, {\"status\": \"affected\", \"version\": \"MT6989\"}, {\"status\": \"affected\", \"version\": \"MT6990\"}, {\"status\": \"affected\", \"version\": \"MT6991\"}, {\"status\": \"affected\", \"version\": \"MT6993\"}, {\"status\": \"affected\", \"version\": \"MT8668\"}, {\"status\": \"affected\", \"version\": \"MT8673\"}, {\"status\": \"affected\", \"version\": \"MT8675\"}, {\"status\": \"affected\", \"version\": \"MT8676\"}, {\"status\": \"affected\", \"version\": \"MT8678\"}, {\"status\": \"affected\", \"version\": \"MT8755\"}, {\"status\": \"affected\", \"version\": \"MT8771\"}, {\"status\": \"affected\", \"version\": \"MT8775\"}, {\"status\": \"affected\", \"version\": \"MT8791\"}, {\"status\": \"affected\", \"version\": \"MT8791T\"}, {\"status\": \"affected\", \"version\": \"MT8792\"}, {\"status\": \"affected\", \"version\": \"MT8793\"}, {\"status\": \"affected\", \"version\": \"MT8795T\"}, {\"status\": \"affected\", \"version\": \"MT8797\"}, {\"status\": \"affected\", \"version\": \"MT8798\"}, {\"status\": \"affected\", \"version\": \"MT8863\"}, {\"status\": \"affected\", \"version\": \"MT8873\"}, {\"status\": \"affected\", \"version\": \"MT8883\"}, {\"status\": \"affected\", \"version\": \"MT8893\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://corp.mediatek.com/product-security-bulletin/February-2026\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In Modem, there is a possible system crash due to improper input validation. 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: MOLY00827332; Issue ID: MSV-5919.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-617\", \"description\": \"CWE-617 Reachable Assertion\"}]}], \"providerMetadata\": {\"orgId\": \"ee979b05-11f8-4f25-a7e0-a1fa9c190374\", \"shortName\": \"MediaTek\", \"dateUpdated\": \"2026-03-30T13:02:41.210Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-20422\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-30T13:02:41.210Z\", \"dateReserved\": \"2025-11-03T01:30:59.010Z\", \"assignerOrgId\": \"ee979b05-11f8-4f25-a7e0-a1fa9c190374\", \"datePublished\": \"2026-02-02T08:14:43.190Z\", \"assignerShortName\": \"MediaTek\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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