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CVE-2020-4587

20
FAUCET Score

CVE-2020-4587 is a stack-based buffer overflow vulnerability affecting IBM Sterling Connect:Direct for UNIX versions 4.2.0, 4.3.0, 6.0.0, and 6.1.0, stemming from improper bounds checking. This vulnerability carries a CVSS v3.1 score of 7.8 (High), indicating that a local attacker with low privileges can exploit it with low complexity to gain root privileges, leading to high impact on confidentiality, integrity, and availability. There is currently 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
6.0.0CPE matchmatch criteria
cpe:2.3:a:ibm:connect\:direct:6.0.0:*:*:*:*:unix:*:*
6.1.0CPE matchmatch criteria
cpe:2.3:a:ibm:connect\:direct:6.1.0:*:*:*:*:unix:*:*
4.2.0CPE matchmatch criteria
cpe:2.3:a:ibm:sterling_connect\:direct:4.2.0:*:*:*:*:unix:*:*
4.3.0CPE matchmatch criteria
cpe:2.3:a:ibm:sterling_connect\:direct:4.3.0:*:*:*:*:unix:*:*

CVSS Data

CVSS version used by this source: 3.0

8.4HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.5
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 65th percentile among its peer group of 17,061 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/184578
VDB EntryVendor Advisory
ibm.com / support/pages/node/6320317
Vendor Advisory