How severe is CVE-2018-6303?

CVE-2018-6303 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-6303 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6303?

CVE-2018-6303 primarily affects Hanwha-security Snh-v6410pn Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-6303?

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-2018-6303 published?

CVE-2018-6303 was published on 2018-03-13 and last updated on 2026-06-17.

CVE-2018-6303

CVE-2018-6303 is a high-severity vulnerability in Hanwha-security Snh-v6410pn Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Hanwha-security Snh-v6410pn Firmware
Published: 2018-03-13
Last modified: 2026-06-17

Description

Denial of service by uploading malformed firmware in Hanwha Techwin Smartcams

Frequently asked questions

What is CVE-2018-6303?: Denial of service by uploading malformed firmware in Hanwha Techwin Smartcams
How severe is CVE-2018-6303?: CVE-2018-6303 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-6303 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6303?: CVE-2018-6303 primarily affects Hanwha-security Snh-v6410pn Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-6303?: 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-2018-6303 published?: CVE-2018-6303 was published on 2018-03-13 and last updated on 2026-06-17.

References

https://securelist.com/somebodys-watching-when-cameras-are-more-than-just-smart/84309/

Affected products (2)

cpe:2.3:o:hanwha-security:snh-v6410pn_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:hanwha-security:snh-v6410pnw_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Hanwha-security Snh-v6410pn Firmware

CVE-2018-6300 — Critical (CVSS 9.8): Remote password change in Hanwha Techwin Smartcams
CVE-2018-6299 — Critical (CVSS 9.8): Authentication bypass in Hanwha Techwin Smartcams
CVE-2018-6298 — Critical (CVSS 9.8): Remote code execution in Hanwha Techwin Smartcams
CVE-2018-6297 — Critical (CVSS 9.8): Buffer overflow in Hanwha Techwin Smartcams
CVE-2018-6295 — Critical (CVSS 9.8): Unencrypted way of remote control and communications in Hanwha Techwin Smartcams
CVE-2018-6294 — Critical (CVSS 9.8): Unsecured way of firmware update in Hanwha Techwin Smartcams

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