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CVE-2020-8442

25
FAUCET Score

CVE-2020-8442 describes a heap-based buffer overflow vulnerability in the ossec-analysisd component of OSSEC-HIDS versions 2.7 through 3.5.0. An authenticated client can trigger this flaw within the rootcheck decoder, leading to a high-severity impact. With a CVSS score of 8.8, this vulnerability allows for complete compromise of confidentiality, integrity, and availability, requiring only low privileges and no user interaction for exploitation over the network. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.7, <= 3.5.0CPE matchmatch criteria
cpe:2.3:a:ossec:ossec:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.38%
Probability of exploitation in next 30 days
EPSS Percentile
82.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0238 is in the 81st percentile among its peer group of 17,822 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / ossec/ossec-hids/issues/1820
ExploitPatchThird Party Advisory
github.com / ossec/ossec-hids/issues/1821
Third Party Advisory
security.gentoo.org / glsa/202007-33
Third Party Advisory
ossec.net
Vendor Advisory