CVE-2026-80335 (GCVE-0-2026-80335)
Vulnerability from cvelistv5 – Published: 2026-11-04 03:20 – Updated: 2026-11-05 07:01
VLAI
EPSS
VEX
Title
Out-of-bounds Write in Bootloader
Summary
Memory Corruption when processing firmware update data in Download mode due to a missing bounds check.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 14:53 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Unisoc (Shanghai) Technologies Co., Ltd. | Bootloader |
Affected:
SC9863A
Affected: SC9832E Affected: SC7731E Affected: T310 Affected: T610 Affected: T618 Affected: T7200 Affected: T7225 Affected: T7250 Affected: T7255 Affected: T7280 Affected: T8100 Affected: T9100 Affected: T8200 Affected: T7300 Affected: T8300 |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-80335",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-11-04T14:53:39.348855Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-11-04T15:18:57.306Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Bootloader",
"vendor": "Unisoc (Shanghai) Technologies Co., Ltd.",
"versions": [
{
"status": "affected",
"version": "SC9863A"
},
{
"status": "affected",
"version": "SC9832E"
},
{
"status": "affected",
"version": "SC7731E"
},
{
"status": "affected",
"version": "T310"
},
{
"status": "affected",
"version": "T610"
},
{
"status": "affected",
"version": "T618"
},
{
"status": "affected",
"version": "T7200"
},
{
"status": "affected",
"version": "T7225"
},
{
"status": "affected",
"version": "T7250"
},
{
"status": "affected",
"version": "T7255"
},
{
"status": "affected",
"version": "T7280"
},
{
"status": "affected",
"version": "T8100"
},
{
"status": "affected",
"version": "T9100"
},
{
"status": "affected",
"version": "T8200"
},
{
"status": "affected",
"version": "T7300"
},
{
"status": "affected",
"version": "T8300"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Memory Corruption when processing firmware update data in Download mode due to a missing bounds check."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.4,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "CWE-787",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-11-05T07:01:13.075Z",
"orgId": "63f92e9c-2193-4c24-98a9-93640392c3d3",
"shortName": "Unisoc"
},
"references": [
{
"url": "https://www.unisoc.com/en/support/product-security-bulletin/2117823464494759937"
}
],
"title": "Out-of-bounds Write in Bootloader"
}
},
"cveMetadata": {
"assignerOrgId": "63f92e9c-2193-4c24-98a9-93640392c3d3",
"assignerShortName": "Unisoc",
"cveId": "CVE-2026-80335",
"datePublished": "2026-11-04T03:20:53.265Z",
"dateReserved": "2026-08-26T08:48:20.974Z",
"dateUpdated": "2026-11-05T07:01:13.075Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-80335",
"date": "2026-11-05",
"epss": "0.00243",
"percentile": "0.15637"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Bootloader",
"vendor": "Unisoc (Shanghai) Technologies Co., Ltd.",
"versions": [
{
"status": "affected",
"version": "SC9863A"
},
{
"status": "affected",
"version": "SC9832E"
},
{
"status": "affected",
"version": "SC7731E"
},
{
"status": "affected",
"version": "T310"
},
{
"status": "affected",
"version": "T610"
},
{
"status": "affected",
"version": "T618"
},
{
"status": "affected",
"version": "T7200"
},
{
"status": "affected",
"version": "T7225"
},
{
"status": "affected",
"version": "T7250"
},
{
"status": "affected",
"version": "T7255"
},
{
"status": "affected",
"version": "T7280"
},
{
"status": "affected",
"version": "T8100"
},
{
"status": "affected",
"version": "T9100"
},
{
"status": "affected",
"version": "T8200"
},
{
"status": "affected",
"version": "T7300"
},
{
"status": "affected",
"version": "T8300"
}
]
}
],
"source": "security@unisoc.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Memory Corruption when processing firmware update data in Download mode due to a missing bounds check."
}
],
"id": "CVE-2026-80335",
"lastModified": "2026-11-05T07:17:27.590",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "PHYSICAL",
"availabilityImpact": "HIGH",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 0.9,
"impactScore": 6.0,
"source": "security@unisoc.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-80335",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-11-04T14:53:39.348855Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-11-04T04:17:37.623",
"references": [
{
"source": "security@unisoc.com",
"url": "https://www.unisoc.com/en/support/product-security-bulletin/2117823464494759937"
}
],
"sourceIdentifier": "security@unisoc.com",
"vulnStatus": "Received",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "security@unisoc.com",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-80335",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-11-04T14:53:39.348855Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-11-04T15:11:06.521Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Bootloader",
"vendor": "Unisoc (Shanghai) Technologies Co., Ltd.",
"versions": [
{
"status": "affected",
"version": "SC9863A"
},
{
"status": "affected",
"version": "SC9832E"
},
{
"status": "affected",
"version": "SC7731E"
},
{
"status": "affected",
"version": "T310"
},
{
"status": "affected",
"version": "T610"
},
{
"status": "affected",
"version": "T618"
},
{
"status": "affected",
"version": "T7200"
},
{
"status": "affected",
"version": "T7225"
},
{
"status": "affected",
"version": "T7250"
},
{
"status": "affected",
"version": "T7255"
},
{
"status": "affected",
"version": "T7280"
},
{
"status": "affected",
"version": "T8100"
},
{
"status": "affected",
"version": "T9100"
},
{
"status": "affected",
"version": "T8200"
},
{
"status": "affected",
"version": "T7300"
},
{
"status": "affected",
"version": "T8300"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the bootloader download module, there is a possible out-of-bounds write due to a failure to reset a global offset variable during firmware update sessions. This could lead to heap memory corruption, system crash, or potential arbitrary code execution with no additional execution privileges needed."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.4,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "CWE-787",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-11-04T03:56:24.347Z",
"orgId": "63f92e9c-2193-4c24-98a9-93640392c3d3",
"shortName": "Unisoc"
},
"references": [
{
"url": "https://www.unisoc.com/en/support/product-security-bulletin/2117823464494759937"
}
],
"title": "Out-of-bounds Write in Bootloader"
}
},
"cveMetadata": {
"assignerOrgId": "63f92e9c-2193-4c24-98a9-93640392c3d3",
"assignerShortName": "Unisoc",
"cveId": "CVE-2026-80335",
"datePublished": "2026-11-04T03:20:53.265Z",
"dateReserved": "2026-08-26T08:48:20.974Z",
"dateUpdated": "2026-11-04T15:18:57.306Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
Loading…
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.
Loading…
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.