CVE-2026-107570
Status: DeferredLow (2.5)—
heap OOB write in convert_file_from_to() via a crafted Content-Type header allows attacker to OOB write when email is used as a template.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
- Base score: 2.5
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.13%
- Percentile among all scored CVEs: 3
- Score date: 10/17/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
🎯 ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1203Exploitation for Client Executionexecution85 % - Primary impact
T1565.001Stored Data Manipulationimpact60 %
Vector CVSS con UI:R (interacción requerida) e AV:L (acceso local) indica ejecución en cliente. OOB write en procesamiento de email permite manipulación de datos en memoria.
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
🛡️ ATT&CK mitigations that cover these techniques
CWEs
- CWE-823
References
Raw JSON (NVD)
Show
{
"id": "CVE-2026-107570",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-107570",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-10-08T13:42:27.582213Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "cve@gitlab.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 2.5,
"attackVector": "LOCAL",
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "REQUIRED",
"attackComplexity": "HIGH",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 1.4,
"exploitabilityScore": 1
}
]
},
"affected": [
{
"source": "cve@gitlab.com",
"affectedData": [
{
"repo": "https://gitlab.com/muttmua/mutt",
"vendor": "mutt",
"product": "mutt",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "2.4.2"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2026-10-08T12:17:14.717",
"references": [
{
"url": "https://gitlab.com/muttmua/mutt/-/work_items/533",
"source": "cve@gitlab.com"
},
{
"url": "http://www.openwall.com/lists/oss-security/2026/10/09/21",
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "cve@gitlab.com",
"description": [
{
"lang": "en",
"value": "CWE-823"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "heap OOB write in convert_file_from_to() via a crafted Content-Type header allows attacker to OOB write when email is used as a template."
}
],
"lastModified": "2026-10-10T00:17:03.540",
"sourceIdentifier": "cve@gitlab.com"
}