Exploited vulnerability · CISA KEV

Is CVE-2021-33044 exploited? Yes: in CISA KEV since 21 Aug 2024

Gociux · Dahua IP Camera Firmware · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-33044, Dahua IP Camera Authentication Bypass Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 21 Aug 2024, 1071 days after it was published. It affects Dahua IP Camera Firmware. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 21 Aug 2024

ransomwareNot knownno confirmed use

EPSStop 1%among the most likely CVEs to be exploited

severity9.8CVSS 3.1 · critical

US federal due11 Sep 2024BOD 22-01 deadline

What it is

Dahua IP cameras and related products contain an authentication bypass vulnerability when the NetKeyboard type argument is specified by the client during authentication.

Vendor	Dahua (2 exploited CVEs in KEV)
Product	IP Camera Firmware
Vulnerability	Dahua IP Camera Authentication Bypass Vulnerability
Weakness	CWE-287
Published	15 Sep 2021
Added to KEV	21 Aug 2024
Reported by (CNA)	dahua

What to do

Check whether you run it. Look for IP Camera Firmware in your asset inventory, including appliances and cloud images. Stack check lists every exploited Dahua CVE at once.
Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 15 Sep 2021.
Get told next time. Email alerts when CISA adds a CVE for Dahua.

Other exploited CVEs in IP Camera Firmware

CVE-2021-33045: Dahua IP Camera Authentication Bypass Vulnerability (21 Aug 2024)

References

Questions

Is CVE-2021-33044 being exploited?

Yes. CISA added CVE-2021-33044 to the Known Exploited Vulnerabilities catalog on 21 Aug 2024, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-33044 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2021-33044?

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check Dahua's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected IP Camera Firmware and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in August 2024 · Dahua scorecard · act-now radar.

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