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CVE-2020-3405

HIGHCVSS 7.3/10EPSS 1.28%

Last modified

CVE-2020-3405 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. A vulnerability in the web UI of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to gain read and write access to information that is stored on an affected system. The vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. EPSS estimates a 1.28% chance of exploitation in the next 30 days.

Description

A vulnerability in the web UI of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to gain read and write access to information that is stored on an affected system. The vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by persuading a user to import a crafted XML file with malicious entries. A successful exploit could allow the attacker to read and write files within the affected application.

Metrics

CVSS 3.1
7.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

EPSS Probability
1.28%

66.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoSd-Wan Firmware<= 19.2.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-3405?
A vulnerability in the web UI of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to gain read and write access to information that is stored on an affected system. The vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by persuading a user to import a crafted XML file with malicious entries. A successful exploit could allow the attacker to read and write files within the affected application.
How severe is CVE-2020-3405?
CVE-2020-3405 has a CVSS score of 7.3/10 (HIGH severity). The EPSS model estimates a 1.28% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3405?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3405?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST