How severe is CVE-2018-0434?

CVE-2018-0434 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2018-0434 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-0434?

CVE-2018-0434 primarily affects Cisco Vedge 100 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-0434?

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-2018-0434 published?

CVE-2018-0434 was published on 2018-10-05 and last updated on 2026-06-17.

CVE-2018-0434

CVE-2018-0434 is a high-severity vulnerability in Cisco Vedge 100 Firmware with a CVSS 3.x base score of 7.4. 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-295.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v2: 5.8
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Cisco Vedge 100 Firmware
Published: 2018-10-05
Last modified: 2026-06-17

Description

A vulnerability in the Zero Touch Provisioning feature of the Cisco SD-WAN Solution could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data by using an invalid certificate. The vulnerability is due to insufficient certificate validation by the affected software. An attacker could exploit this vulnerability by supplying a crafted certificate to an affected device. A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt confidential information on user connections to the affected software.

Frequently asked questions

What is CVE-2018-0434?: A vulnerability in the Zero Touch Provisioning feature of the Cisco SD-WAN Solution could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data by using an invalid certificate. The vulnerability is due to insufficient certificate validation by the affected software. An attacker could exploit this vulnerability by supplying a crafted certificate to an affected device. A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt confidential information on user connections to the affected software.
How severe is CVE-2018-0434?: CVE-2018-0434 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2018-0434 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-0434?: CVE-2018-0434 primarily affects Cisco Vedge 100 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-0434?: 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-2018-0434 published?: CVE-2018-0434 was published on 2018-10-05 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:cisco:vedge_100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vedge_1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vedge_2000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vedge_5000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:vmanage_network_management_system:-:*:*:*:*:*:*:*

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