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CVE-2020-8540

34
FAUCET Score

CVE-2020-8540 is a critical XML External Entity (XXE) vulnerability affecting Zoho ManageEngine Desktop Central versions prior to the March 7, 2020 update. This flaw allows unauthenticated remote attackers to read arbitrary files or perform Server-Side Request Forgery (SSRF) attacks by submitting a specially crafted DTD within an XML request. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, leading to high impact on confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2020-03-07CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_desktop_central:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
12.78%
Probability of exploitation in next 30 days
EPSS Percentile
95.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1278 is in the 92nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

manageengine.com / products/desktop-central/xxe-vulnerability.html
Vendor Advisory