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Vulnerability record · CVE-2018-0434 · published 5 October 2018

CVE-2018-0434: Cisco vedge 100 firmware improper certificate validation vulnerability

Cisco · Vedge 100 Firmware

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.

7.4 CVSS 3.0 High EPSS 0.83% · top 43.7% CWE-295 · Improper certificate validation
7.4CVSS 3.0 base score, v2 5.8
0.83%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/105294 Third Party AdvisoryVDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-sd-wan-validation Vendor Advisory
http://www.securityfocus.com/bid/105294 Third Party AdvisoryVDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-sd-wan-validation Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2019-1650Cisco vedge 100 firmware improper input validation vulnerabilityA vulnerability in the Cisco SD-WAN Solution could allow an authenticated, remote attacker to overwrite arbitrary files on the underlying operating s…EPSS 3.5%8.8CVE-2018-0432Cisco vedge 100 firmware permissions and access controls vulnerabilityA vulnerability in the error reporting feature of the Cisco SD-WAN Solution could allow an authenticated, remote attacker to gain elevated privileges…EPSS 2.6%7.8CVE-2021-1528Cisco catalyst sd-wan manager execution with unnecessary privileges vulnerabilityA vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to gain elevated privileges on an affected system. T…EPSS 0.25%7.8CVE-2021-1514Cisco catalyst sd-wan manager improper input validation vulnerabilityA vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to inject arbitrary commands to be executed with Adm…EPSS 0.33%7.8CVE-2019-1648Cisco vedge 100 firmware permissions and access controls vulnerabilityA vulnerability in the user group configuration of the Cisco SD-WAN Solution could allow an authenticated, local attacker to gain elevated privileges…EPSS 0.37%7.8CVE-2019-1646Cisco vedge 100 firmware permissions and access controls vulnerabilityA vulnerability in the local CLI of the Cisco SD-WAN Solution could allow an authenticated, local attacker to escalate privileges and modify device c…EPSS 0.45%7.8CVE-2018-0433Cisco vedge 100 firmware command injection vulnerabilityA vulnerability in the command-line interface (CLI) in the Cisco SD-WAN Solution could allow an authenticated, local attacker to inject arbitrary com…EPSS 0.45%7.5CVE-2021-1510Cisco vedge 100 firmware memory buffer overflow vulnerabilityMultiple vulnerabilities in Cisco SD-WAN vEdge Software could allow an attacker to execute arbitrary code as the root user or cause a denial of servi…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2018-0434), CISA KEV, FIRST EPSS (scores of 2026-10-07). This page is refreshed as NVD updates the record.