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 < 95.0.4638.69 (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://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
- https://crbug.com/1263462
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/
- https://www.debian.org/security/2022/dsa-5046
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-38003
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": 0.38573,
"percentile": 0.98598
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.38573,
"percentile": 0.98589
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.38573,
"percentile": 0.98587
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.38573,
"percentile": 0.98586
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.38573,
"percentile": 0.98586
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.38573,
"percentile": 0.98585
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.38573,
"percentile": 0.98583
}05 Nov 2026, 06:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"x_refsource_MISC",
"x_transferred"
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"url": "https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://crbug.com/1263462"
},
{
"name": "FEDORA-2021-6a292e2cf4",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/"
},
{
"name": "DSA-5046",
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"vendor-advisory",
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"x_transferred"
],
"url": "https://www.debian.org/security/2022/dsa-5046"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2021-38003",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-01-29T16:50:22.850976Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2021-11-03",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-38003"
},
"type": "kev"
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],
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],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:25:24.322Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
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],
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{
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"time": "2021-11-03T00:00:00.000Z",
"value": "CVE-2021-38003 added to CISA KEV"
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"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
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"vendor": "Google",
"versions": [
{
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{
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],
"providerMetadata": {
"dateUpdated": "2022-01-15T14:08:16.000Z",
"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28",
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},
"references": [
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],
"url": "https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://crbug.com/1263462"
},
{
"name": "FEDORA-2021-6a292e2cf4",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/"
},
{
"name": "DSA-5046",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN"
],
"url": "https://www.debian.org/security/2022/dsa-5046"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "chrome-cve-admin@google.com",
"ID": "CVE-2021-38003",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Chrome",
"version": {
"version_data": [
{
"version_affected": "<",
"version_value": "95.0.4638.69"
}
]
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}
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},
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},
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{
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},
"problemtype": {
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"references": {
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{
"name": "https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html",
"refsource": "MISC",
"url": "https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html"
},
{
"name": "https://crbug.com/1263462",
"refsource": "MISC",
"url": "https://crbug.com/1263462"
},
{
"name": "FEDORA-2021-6a292e2cf4",
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/"
},
{
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}
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},
"cveMetadata": {
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"assignerShortName": "Chrome",
"cveId": "CVE-2021-38003",
"datePublished": "2021-11-23T21:30:31.000Z",
"dateReserved": "2021-08-03T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:25:24.322Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.38573,
"percentile": 0.98582
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.38573,
"percentile": 0.9858
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.38573,
"percentile": 0.98578
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2021-38003",
"cwes": [
"CWE-122",
"CWE-755"
],
"dateAdded": "2021-11-03",
"dueDate": "2021-11-17",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-38003",
"product": "Chromium V8",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Google Chromium V8 Engine has a bug in JSON.stringify, where the internal TheHole value can leak to script code, causing memory corruption. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.",
"vendorProject": "Google",
"vulnerabilityName": "Google Chromium V8 Memory Corruption Vulnerability"
}