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CVE-2023-28528

34
FAUCET Score

CVE-2023-28528 is a critical vulnerability affecting IBM AIX versions 7.1, 7.2, 7.3, and VIOS 3.1, allowing a non-privileged local user to execute arbitrary commands via the invscout command. With a CVSS score of 7.8 (High), this flaw presents a significant risk due to its low attack complexity and the potential for complete compromise of confidentiality, integrity, and availability. While not currently listed in CISA's KEV catalog or showing active exploitation in the wild, a Metasploit module exists, indicating readily available exploit code and increasing the likelihood of future attacks. Community discussion and media coverage are currently minimal.

Impacted Technologies

VendorProductVersion(s)CPE
3.1CPE matchmatch criteria
cpe:2.3:a:ibm:vios:3.1:*:*:*:*:*:*:*
7.1CPE matchmatch criteria
cpe:2.3:o:ibm:aix:7.1:*:*:*:*:*:*:*
7.2CPE matchmatch criteria
cpe:2.3:o:ibm:aix:7.2:*:*:*:*:*:*:*
7.3CPE matchmatch criteria
cpe:2.3:o:ibm:aix:7.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.4HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
1.46%
Probability of exploitation in next 30 days
EPSS Percentile
70.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Metasploit: invscout RPM Privilege Escalation · Apr 24, 2023
This CVE's current EPSS score of 0.0146 is in the 95th percentile among its peer group of 16,994 CVEs.

Social Chatter

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

talosintelligence.com / vulnerability_reports/TALOS-2023-1691
packetstormsecurity.com / files/172458/IBM-AIX-7.2-inscout-Privilege-Escalation.html
exchange.xforce.ibmcloud.com / vulnerabilities/251207
VDB EntryVendor Advisory
ibm.com / support/pages/node/6983232
PatchVendor Advisory