Exploitation evidence
Known exploited · CISA KEV listed
Added 2024-08-21. Ransomware campaign use: Unknown.
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date: 2024-09-11. 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
n/a / Some Dahua IP Camera, Video Intercom, PTZ Dome Camera, Thermal Camera devices
Default status: Not specified
- affected: Dahua IP Camera devices IPC-HX3XXX, IPC-HX5XXX, and IPC-HUM7XXX, Video Intercom devices VTO75X95X, VTO65XXX, and VTH542XH, PTZ Dome Camera SD1A1, SD22, SD49, SD50, SD52C, and SD6AL, Thermal TPC-BF1241, TPC-BF2221, TPC-SD2221, TPC-BF5XXX, TPC-SD8X21, and TPC-PT8X21B devices Buildtime before June, 2021.
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
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": 0.99989,
"percentile": 0.99984
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.99989,
"percentile": 0.99984
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.99989,
"percentile": 0.99984
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.99989,
"percentile": 0.99984
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.99989,
"percentile": 0.99984
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.99989,
"percentile": 0.99984
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.99989,
"percentile": 0.99984
}05 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
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"dateUpdated": "2024-08-03T23:42:19.261Z",
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"references": [
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"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.dahuasecurity.com/support/cybersecurity/details/957"
},
{
"name": "20211005 [Update]: Dahua Authentication bypass (CVE-2021-33044, CVE-2021-33045)",
"tags": [
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"x_refsource_FULLDISC",
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"url": "http://seclists.org/fulldisclosure/2021/Oct/13"
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"url": "http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html"
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"title": "CVE Program Container"
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{
"metrics": [
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"attackVector": "NETWORK",
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"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
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"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33044"
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{
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"role": "CISA Coordinator",
"timestamp": "2024-09-05T14:59:48.366509Z",
"version": "2.0.3"
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"problemTypes": [
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"dateUpdated": "2026-01-12T19:53:16.325Z",
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"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33044"
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"title": "CISA ADP Vulnrichment"
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],
"cna": {
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{
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"vendor": "n/a",
"versions": [
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],
"descriptions": [
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},
{
"name": "20211005 [Update]: Dahua Authentication bypass (CVE-2021-33044, CVE-2021-33045)",
"tags": [
"mailing-list",
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"url": "http://seclists.org/fulldisclosure/2021/Oct/13"
},
{
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],
"url": "http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html"
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],
"x_legacyV4Record": {
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"version_value": "Dahua IP Camera devices IPC-HX3XXX, IPC-HX5XXX, and IPC-HUM7XXX, Video Intercom devices VTO75X95X, VTO65XXX, and VTH542XH, PTZ Dome Camera SD1A1, SD22, SD49, SD50, SD52C, and SD6AL, Thermal TPC-BF1241, TPC-BF2221, TPC-SD2221, TPC-BF5XXX, TPC-SD8X21, and TPC-PT8X21B devices Buildtime before June, 2021."
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},
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{
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},
{
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"url": "http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html"
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},
"cveMetadata": {
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"datePublished": "2021-09-15T21:36:04.000Z",
"dateReserved": "2021-05-17T00:00:00.000Z",
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"state": "PUBLISHED"
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}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.99989,
"percentile": 0.99984
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.99989,
"percentile": 0.99984
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.99989,
"percentile": 0.99984
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2021-33044",
"cwes": [
"CWE-287"
],
"dateAdded": "2024-08-21",
"dueDate": "2024-09-11",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://www.dahuasecurity.com/aboutUs/trustedCenter/details/582; https://nvd.nist.gov/vuln/detail/CVE-2021-33044",
"product": "IP Camera Firmware",
"requiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
"shortDescription": "Dahua IP cameras and related products contain an authentication bypass vulnerability when the NetKeyboard type argument is specified by the client during authentication.",
"vendorProject": "Dahua",
"vulnerabilityName": "Dahua IP Camera Authentication Bypass Vulnerability"
}