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CVE-2020-27217

24
FAUCET Score

CVE-2020-27217 affects Eclipse Hono versions 1.3.0 and 1.4.0, where the AMQP protocol adapter fails to validate the size of incoming messages. This allows a malicious AMQP 1.0 client to send arbitrarily large messages, leading to an out-of-memory exception and denial of service. The vulnerability has a CVSS score of 7.5 (HIGH), indicating it can be exploited remotely with low complexity, resulting in high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.0CPE matchmatch criteria
cpe:2.3:a:eclipse:hono:1.3.0:*:*:*:*:*:*:*
1.4.0CPE matchmatch criteria
cpe:2.3:a:eclipse:hono:1.4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.29%
Probability of exploitation in next 30 days
EPSS Percentile
67.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0129 is in the 47th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: org.eclipse.hono:hono-coreFixed in: 1.4.3

Vendor Advisories (1)

mavenGHSA-9f52-hpvw-v96whigh

Improper Validation of Specified Quantity in Input in Eclipse Hono

Feb 10, 2022

References

bugs.eclipse.org / bugs/show_bug.cgi
Issue TrackingVendor Advisory