CVE-2017-15883

CRITICALNVD 9.89.8—

9.8

Sitefinity 5.1, 5.2, 5.3, 5.4, 6.x, 7.x, 8.x, 9.x, and 10.x allow remote attackers to bypass authentication and consequently cause a denial of service on load balanced sites or gain privileges via vectors related to weak cryptography.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 28.2%
KEV: Not listed

Published

January 8, 2018

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated May 23, 2026

No patch confirmed yet.

generic

Progress Customer Community

https://knowledgebase.progress.com/articles/Article/Sitefinity-Security-Advisory-for-cryptographic-vulnerability-CVE-2017-15883

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-287Improper Authentication

Data Freshness Timeline

(refreshed 9× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 12:48 UTCEG score recompute
2026-05-28 12:48 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 12:46 UTCOSV refresh

Frequently asked(5)

What is CVE-2017-15883?

CVE-2017-15883 is a critical vulnerability published on January 8, 2018. Sitefinity 5.1, 5.2, 5.3, 5.4, 6.x, 7.x, 8.x, 9.x, and 10.x allow remote attackers to bypass authentication and consequently cause a denial of service on load balanced sites or gain privileges via vectors related to weak cryptography.

When was CVE-2017-15883 disclosed?

CVE-2017-15883 was first published in the National Vulnerability Database on January 8, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2017-15883 actively exploited?

CVE-2017-15883 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2017-15883?

CVE-2017-15883 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2017-15883?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-15883, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2017-15883

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Progress Customer Community

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2017-15883?

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Advisory Details (1)

Frequently asked(5)

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