How severe is CVE-2023-3703?

CVE-2023-3703 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-3703 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-3703?

CVE-2023-3703 primarily affects Proscend M357-5g Firmware. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-3703?

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

When was CVE-2023-3703 published?

CVE-2023-3703 was published on 2023-09-03 and last updated on 2026-06-17.

CVE-2023-3703

CVE-2023-3703 is a critical-severity vulnerability in Proscend M357-5g Firmware with a CVSS 3.x base score of 10.0. 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-1392.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1392
Affected product: Proscend M357-5g Firmware
Published: 2023-09-03
Last modified: 2026-06-17

Description

Proscend Advice ICR Series routers FW version 1.76 - CWE-1392: Use of Default Credentials

Frequently asked questions

What is CVE-2023-3703?: Proscend Advice ICR Series routers FW version 1.76 - CWE-1392: Use of Default Credentials
How severe is CVE-2023-3703?: CVE-2023-3703 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-3703 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-3703?: CVE-2023-3703 primarily affects Proscend M357-5g Firmware. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-3703?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-3703 published?: CVE-2023-3703 was published on 2023-09-03 and last updated on 2026-06-17.

References

https://www.gov.il/en/Departments/faq/cve_advisories

Affected products (20)

cpe:2.3:o:proscend:m357-5g_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m357-ai_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m350-5g_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m350-w5g_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m350-6_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m350-w6_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m331_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m330-w_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m330-w5_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m301-g_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m301-gw_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m560-5g_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:m360-p_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:a551i-f1_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:a552i-f1_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:a510-f1_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:a520i-f1_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:a551i-f4_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:a543i-l1_firmware:1.76:*:*:*:*:*:*:*
cpe:2.3:o:proscend:a510-l1_firmware:1.76:*:*:*:*:*:*:*

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