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CVE-2018-9263

25
FAUCET Score

CVE-2018-9263 describes a denial-of-service vulnerability in Wireshark versions 2.4.0 through 2.4.5 and 2.2.0 through 2.2.13, where a crafted Kerberos packet could cause the dissector to crash. This vulnerability carries a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity, resulting in high availability impact without requiring user interaction or privileges. While the vulnerability is significant, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or notable community discussion or media coverage. The issue was addressed by ensuring a non-zero key length in the Kerberos dissector.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.2.0, <= 2.2.13CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
>= 2.4.0, <= 2.4.5CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

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
2.57%
Probability of exploitation in next 30 days
EPSS Percentile
83.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0257 is in the 71st percentile among its peer group of 51,485 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-2018-9263Low

wireshark: Kerberos dissector crash in epan/dissectors/packet-kerberos.c

Mar 28, 2018

References

bugs.wireshark.org / bugzilla/show_bug.cgi
ExploitIssue TrackingVendor Advisory
code.wireshark.org / review/gitweb
lists.debian.org / debian-lts-announce/2018/05/msg00019.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2019/01/msg00010.html
Mailing ListThird Party Advisory
wireshark.org / security/wnpa-sec-2018-23.html
Vendor Advisory