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CVE-2018-2021

22
FAUCET Score

CVE-2018-2021 describes a cross-site scripting (XSS) vulnerability in IBM QRadar SIEM versions 7.2 and 7.3. This flaw allows an attacker to inject malicious JavaScript into the web interface, potentially leading to credential disclosure within a user's trusted session. The vulnerability has a CVSS score of 6.1 (Medium), indicating it can be exploited remotely with low attack complexity, requiring user interaction. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.2.0, < 7.2.8CPE matchmatch criteria
cpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:*:*:*:*
>= 7.3.0, <= 7.3.2CPE matchmatch criteria
cpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:*:*:*:*
7.2.8CPE matchmatch criteria
cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.2.8:-:*:*:*:*:*:*
7.2.8CPE matchmatch criteria
cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.2.8:p1:*:*:*:*:*:*
7.2.8CPE matchmatch criteria
cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.2.8:p10:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.90%
Probability of exploitation in next 30 days
EPSS Percentile
56.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0090 is in the 67th percentile among its peer group of 26,236 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/155345
VDB EntryVendor Advisory
ibm.com / support/docview.wss
PatchVendor Advisory