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CVE-2017-7177

25
FAUCET Score

CVE-2017-7177 describes an IPv4 defragmentation evasion vulnerability in Suricata versions prior to 3.2.1, stemming from a missing check for the IP protocol during fragment matching. This high-severity vulnerability (CVSS 7.5) can be exploited remotely with low complexity, potentially leading to high integrity impacts without requiring user interaction. While the vulnerability has no known active exploitation, publicly available exploit code, or significant community discussion, it remains a critical flaw in affected Suricata installations.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.2CPE matchmatch criteria
cpe:2.3:a:openinfosecfoundation:suricata:*:*:*:*:*:*:*:*

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:H/A:N

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

Exploit Intelligence

EPSS Score
1.26%
Probability of exploitation in next 30 days
EPSS Percentile
66.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0126 is in the 46th percentile among its peer group of 51,506 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / inliniac/suricata/commit/4a04f814b15762eb446a5ead4d69d021512df6f8
Issue TrackingPatchThird Party Advisory
lists.debian.org / debian-lts-announce/2018/12/msg00000.html
redmine.openinfosecfoundation.org / issues/2019
Issue TrackingPatchThird Party Advisory
securityfocus.com / bid/97047