How severe is CVE-2020-9499?

CVE-2020-9499 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-9499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9499?

CVE-2020-9499 primarily affects Dahuasecurity Sd6al Firmware. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-9499?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-9499 published?

CVE-2020-9499 was published on 2020-04-09 and last updated on 2026-06-17.

CVE-2020-9499

CVE-2020-9499 is a high-severity vulnerability in Dahuasecurity Sd6al Firmware with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Dahuasecurity Sd6al Firmware
Published: 2020-04-09
Last modified: 2026-06-17

Description

Some Dahua products have buffer overflow vulnerabilities. After the successful login of the legal account, the attacker sends a specific DDNS test command, which may cause the device to go down.

Frequently asked questions

What is CVE-2020-9499?: Some Dahua products have buffer overflow vulnerabilities. After the successful login of the legal account, the attacker sends a specific DDNS test command, which may cause the device to go down.
How severe is CVE-2020-9499?: CVE-2020-9499 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-9499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9499?: CVE-2020-9499 primarily affects Dahuasecurity Sd6al Firmware. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-9499?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-9499 published?: CVE-2020-9499 was published on 2020-04-09 and last updated on 2026-06-17.

References

https://www.dahuasecurity.com/support/cybersecurity/details/727

Affected products (19)

cpe:2.3:o:dahuasecurity:sd6al_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:sd5a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:sd1a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:ptz1a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:sd50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:sd52c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:ipc-hx5842h_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:ipc-hx7842h_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:ipc-hx2xxx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:ipc-hxxx5x4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:n42b1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:n42b2p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:n42b3p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:n52a4p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:n54a4p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:n52b2p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:n52b5p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:n52b3p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:n54b2p_firmware:*:*:*:*:*:*:*:*

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