Cisco Firepower Device Manager On-Box Software XML Parsing Vulnerability

published 2020-05-06 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-24581

cvss: 5.5; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits: 0; none known

A vulnerability in the XML parser code of Cisco Firepower Device Manager On-Box software could allow an authenticated, remote attacker to cause an affected system to become unstable or reload. The vulnerability is due to insufficient hardening of the XML parser configuration. An attacker could exploit this vulnerability in multiple ways using a malicious file: An attacker with administrative privileges could upload a malicious XML file on the system and cause the XML code to parse the malicious file. An attacker with Clientless Secure Sockets Layer (SSL) VPN access could exploit this vulnerability by sending a crafted XML file. A successful exploit would allow the attacker to crash the XML parser process, which could cause system instability, memory exhaustion, and in some cases lead to a reload of the affected system.

Patch / fix

fixed in 1

cisco firepower_device_manager_on-box 6.2.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 23 mo ago (2024-11-15)

Exploit prediction

1.22% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.5	CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L
NVD	3.1	4.9	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	6.8	AV:N/AC:L/Au:S/C:N/I:N/A:C

Affected products

Cisco Cisco Firepower Threat Defense Software

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-xpftd-gYDXyN8H
vendor-advisory

Sources

CVE List CVE-2020-3310
NVD CVE-2020-3310

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Summary