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CVE-2018-9257

23
FAUCET Score

CVE-2018-9257 describes a denial-of-service vulnerability in Wireshark versions 2.4.0 through 2.4.5, where a crafted CQL packet could trigger an infinite loop in the CQL dissector. Rated 7.5 HIGH on CVSS, this flaw is remotely exploitable with low attack complexity, potentially leading to a complete loss of availability (A:H) without requiring user interaction. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.4.0, <= 2.4.5CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.86%
Probability of exploitation in next 30 days
EPSS Percentile
77.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0186 is in the 60th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Vendor Advisories (1)

redhatCVE-2018-9257Low

wireshark: infinite loop in the CQL dissector in epan/dissectors/packet-cql.c

Mar 14, 2018

References

bugs.wireshark.org / bugzilla/show_bug.cgi
ExploitIssue Tracking
code.wireshark.org / review/gitweb
wireshark.org / security/wnpa-sec-2018-22.html
Vendor Advisory