Exploitation evidence
Known exploited · CISA KEV listed
Added 2021-11-03. Ransomware campaign use: Unknown.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2021-11-17. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Google / Chrome
Default status: Not specified
- affected: unspecified to < 86.0.4240.111 (custom)
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://crbug.com/1139963
- https://chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop_20.html
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J3QVIGAAJ4D62YEJAJJWMCCBCOQ6TVL7/
- https://security.gentoo.org/glsa/202011-12
- http://seclists.org/fulldisclosure/2020/Nov/33
- https://security.gentoo.org/glsa/202012-04
- https://www.debian.org/security/2021/dsa-4824
- https://googleprojectzero.blogspot.com/p/rca-cve-2020-15999.html
- https://security.gentoo.org/glsa/202401-19
- https://security.netapp.com/advisory/ntap-20240812-0001/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-15999
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.63894,
"percentile": 0.99235
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.63894,
"percentile": 0.9923
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.63894,
"percentile": 0.99228
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.63894,
"percentile": 0.99228
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.63894,
"percentile": 0.99228
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.63894,
"percentile": 0.99227
}06 Nov 2026, 06:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
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"dateUpdated": "2024-08-12T22:02:48.152Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"url": "https://crbug.com/1139963"
},
{
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"url": "https://chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop_20.html"
},
{
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"tags": [
"vendor-advisory",
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"url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html"
},
{
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J3QVIGAAJ4D62YEJAJJWMCCBCOQ6TVL7/"
},
{
"name": "GLSA-202011-12",
"tags": [
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"url": "https://security.gentoo.org/glsa/202011-12"
},
{
"name": "20201118 TCMalloc viewer/dumper - TCMalloc Inspector Tool",
"tags": [
"mailing-list",
"x_transferred"
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"url": "http://seclists.org/fulldisclosure/2020/Nov/33"
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{
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"tags": [
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"url": "https://security.gentoo.org/glsa/202012-04"
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{
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],
"url": "https://www.debian.org/security/2021/dsa-4824"
},
{
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],
"url": "https://googleprojectzero.blogspot.com/p/rca-cve-2020-15999.html"
},
{
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"tags": [
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"url": "https://security.gentoo.org/glsa/202401-19"
},
{
"url": "https://security.netapp.com/advisory/ntap-20240812-0001/"
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],
"title": "CVE Program Container"
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{
"metrics": [
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.6,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2020-15999",
"options": [
{
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},
{
"Automatable": "no"
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{
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"timestamp": "2025-02-04T14:58:48.995301Z",
"version": "2.0.3"
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"references": [
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],
"timeline": [
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"time": "2021-11-03T00:00:00.000Z",
"value": "CVE-2020-15999 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Chrome",
"vendor": "Google",
"versions": [
{
"lessThan": "86.0.4240.111",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
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],
"descriptions": [
{
"lang": "en",
"value": "Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page."
}
],
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{
"url": "https://chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop_20.html"
},
{
"name": "openSUSE-SU-2020:1829",
"tags": [
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],
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html"
},
{
"name": "FEDORA-2020-6b35849edd",
"tags": [
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],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J3QVIGAAJ4D62YEJAJJWMCCBCOQ6TVL7/"
},
{
"name": "GLSA-202011-12",
"tags": [
"vendor-advisory"
],
"url": "https://security.gentoo.org/glsa/202011-12"
},
{
"name": "20201118 TCMalloc viewer/dumper - TCMalloc Inspector Tool",
"tags": [
"mailing-list"
],
"url": "http://seclists.org/fulldisclosure/2020/Nov/33"
},
{
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"tags": [
"vendor-advisory"
],
"url": "https://security.gentoo.org/glsa/202012-04"
},
{
"name": "DSA-4824",
"tags": [
"vendor-advisory"
],
"url": "https://www.debian.org/security/2021/dsa-4824"
},
{
"url": "https://googleprojectzero.blogspot.com/p/rca-cve-2020-15999.html"
},
{
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"assignerShortName": "Chrome",
"cveId": "CVE-2020-15999",
"datePublished": "2020-11-03T00:00:00.000Z",
"dateReserved": "2020-07-27T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:35:33.599Z",
"state": "PUBLISHED"
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"dataVersion": "5.1"
}05 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.63894,
"percentile": 0.99226
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.63894,
"percentile": 0.99225
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.63894,
"percentile": 0.99224
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.63894,
"percentile": 0.99223
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2020-15999",
"cwes": [
"CWE-787"
],
"dateAdded": "2021-11-03",
"dueDate": "2021-11-17",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2020-15999",
"product": "Chrome FreeType",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Google Chrome uses FreeType, an open-source software library to render fonts, which contains a heap buffer overflow vulnerability in the function Load_SBit_Png when processing PNG images embedded into fonts. This vulnerability is part of an exploit chain with CVE-2020-17087 on Windows and CVE-2020-16010 on Android.",
"vendorProject": "Google",
"vulnerabilityName": "Google Chrome FreeType Heap Buffer Overflow Vulnerability"
}