CVE-2021-33046

Some Dahua products have access control vulnerability in the password reset process. Attackers can exploit this vulnerability through specific deployments to reset device passwords.

Published: 2022-01-13 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-33046 is rated Moderate Risk (61.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.50%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-33046

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.59% 0.50% -0.09%
2 2025-11-18 0.50% 0.59% +0.09%
3 2025-09-06 — 0.50% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-33046

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2021-33046

Affected software / configurations for CVE-2021-33046

Vendor Product Version Raw CPE
dahuasecurity ipc-hx1xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:ipc-hx1xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity ipc-hx2xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:ipc-hx2xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity ipc-hx3xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:ipc-hx3xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity ipc-hx5\(4\)\(3\)xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:ipc-hx5\(4\)\(3\)xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity ipc-hx5xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:ipc-hx5xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity sd1a1_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:sd1a1_firmware:*:*:*:*:*:*:*:*
dahuasecurity sd22_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:sd22_firmware:*:*:*:*:*:*:*:*
dahuasecurity sd49_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:sd49_firmware:*:*:*:*:*:*:*:*
dahuasecurity sd50_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:sd50_firmware:*:*:*:*:*:*:*:*
dahuasecurity sd52c_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:sd52c_firmware:*:*:*:*:*:*:*:*
dahuasecurity sd6al_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:sd6al_firmware:*:*:*:*:*:*:*:*
dahuasecurity tpc-bf1241_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:tpc-bf1241_firmware:*:*:*:*:*:*:*:*
dahuasecurity tpc-bf2221_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:tpc-bf2221_firmware:*:*:*:*:*:*:*:*
dahuasecurity tpc-bf5x01_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:tpc-bf5x01_firmware:*:*:*:*:*:*:*:*
dahuasecurity tpc-pt8x21x_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:tpc-pt8x21x_firmware:*:*:*:*:*:*:*:*
dahuasecurity tpc-sd2221_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:tpc-sd2221_firmware:*:*:*:*:*:*:*:*
dahuasecurity tpc-sd8x21_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:tpc-sd8x21_firmware:*:*:*:*:*:*:*:*
dahuasecurity nvr1xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:nvr1xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity nvr2xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:nvr2xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity nvr4xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:nvr4xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity nvr5xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:nvr5xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity xvr4xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:xvr4xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity xvr5xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:xvr5xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity xvr7xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:xvr7xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity hcvr7xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:hcvr7xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity hcvr8xxx_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:hcvr8xxx_firmware:*:*:*:*:*:*:*:*
dahuasecurity vtox20xf_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:vtox20xf_firmware:*:*:*:*:*:*:*:*
dahuasecurity asc2204c_firmware >= 2017-7, <= 2021-7 cpe:2.3:o:dahuasecurity:asc2204c_firmware:*:*:*:*:*:*:*:*

References for CVE-2021-33046

cvelogic Threat Intelligence