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CVE-2017-5543

32
FAUCET Score

CVE-2017-5543 is a critical PHP Object Injection vulnerability affecting Subrion CMS version 4.0.5. Attackers can exploit this by injecting crafted serialized data into the 'salt' cookie during a login request. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network without authentication, leading to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0.5CPE matchmatch criteria
cpe:2.3:a:intelliants:subrion:4.0.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.05%
Probability of exploitation in next 30 days
EPSS Percentile
79.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0205 is in the 68th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: intelliants/subrionFixed in: 4.1.0
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-4j79-4m6q-77vfcritical

Subrion CMS PHP Object Injection

May 14, 2022

References

github.com / intelliants/subrion/issues/297
Issue TrackingPatchThird Party Advisory
securityfocus.com / bid/95688
Third Party AdvisoryVDB Entry