CVE-2017-5543
CVE-2017-5543 is a critical-severity vulnerability in Intelliants Subrion with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (81st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-94
- Affected product: Intelliants Subrion
- Published:
- Last modified:
Description
includes/classes/ia.core.users.php in Subrion CMS 4.0.5 allows remote attackers to conduct PHP Object Injection attacks via crafted serialized data in a salt cookie in a login request.
Frequently asked questions
- What is CVE-2017-5543?
- includes/classes/ia.core.users.php in Subrion CMS 4.0.5 allows remote attackers to conduct PHP Object Injection attacks via crafted serialized data in a salt cookie in a login request.
- How severe is CVE-2017-5543?
- CVE-2017-5543 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2017-5543 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-5543?
- CVE-2017-5543 affects Intelliants Subrion. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2017-5543?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2017-5543 published?
- CVE-2017-5543 was published on 2017-01-20 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:intelliants:subrion:4.0.5:*:*:*:*:*:*:*
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- CVE-2023-46947 — High (CVSS 8.8): Subrion 4.2.1 has a remote command execution vulnerability in the backend.
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- CVE-2019-20390 — High (CVSS 8.1): A Cross-Site Request Forgery (CSRF) vulnerability was discovered in Subrion CMS 4.2.1 that allows a remote attacker to…
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