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CVE-2019-4261

23
FAUCET Score

CVE-2019-4261 describes a denial-of-service vulnerability affecting IBM WebSphere MQ and IBM MQ versions 7.1 through 9.1 CD, stemming from specially crafted messages. This medium-severity vulnerability (CVSS 6.5) can be exploited remotely with low attack complexity and requires low privileges, leading to high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0.0.0, <= 8.0.0.11CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:*:*:*:*
>= 9.0.0.0, <= 9.0.0.6CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
>= 9.1.0, <= 9.1.2CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:continuous_delivery:*:*:*
>= 9.1.0.0, <= 9.1.0.2CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
>= 7.1.0.0, <= 7.1.0.9CPE 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
2.35%
Probability of exploitation in next 30 days
EPSS Percentile
82.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0235 is in the 93rd percentile among its peer group of 21,977 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/160013
VDB EntryVendor Advisory
ibm.com / support/docview.wss
PatchVendor Advisory