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CVE-2018-1503

19
FAUCET Score

CVE-2018-1503 describes a vulnerability in IBM WebSphere MQ versions 7.5, 8.0, and 9.0, where a remotely authenticated attacker can disrupt message transmission by sending invalid or malformed headers. This vulnerability has a CVSS v3 score of 4.3 (Medium), indicating a low-impact denial of service with low attack complexity and requiring prior authentication. 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
>= 7.5.0.0, <= 7.5.0.8CPE matchmatch criteria
cpe:2.3:a:ibm:websphere_mq:*:*:*:*:*:*:*:*
>= 8.0.0.0, <= 8.0.0.9CPE matchmatch criteria
cpe:2.3:a:ibm:websphere_mq:*:*:*:*:*:*:*:*
>= 9.0.0.0, <= 9.0.0.3CPE matchmatch criteria
cpe:2.3:a:ibm:websphere_mq:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.02%
Probability of exploitation in next 30 days
EPSS Percentile
78.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0202 is in the 91st percentile among its peer group of 21,957 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 0.0 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/141339
VDB EntryVendor Advisory
ibm.com / support/docview.wss
Vendor Advisory
securityfocus.com / bid/104953
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041387
Third Party AdvisoryVDB Entry