How severe is CVE-2018-17055?

CVE-2018-17055 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-17055 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17055?

CVE-2018-17055 affects Progress Sitefinity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-17055?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-17055 published?

CVE-2018-17055 was published on 2018-09-28 and last updated on 2026-06-17.

CVE-2018-17055

CVE-2018-17055 is a high-severity vulnerability in Progress Sitefinity with a CVSS 3.x base score of 7.5. 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-434.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Progress Sitefinity
Published: 2018-09-28
Last modified: 2026-06-17

Description

An arbitrary file upload vulnerability in Progress Sitefinity CMS versions 4.0 through 11.0 related to image uploads.

Frequently asked questions

What is CVE-2018-17055?: An arbitrary file upload vulnerability in Progress Sitefinity CMS versions 4.0 through 11.0 related to image uploads.
How severe is CVE-2018-17055?: CVE-2018-17055 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-17055 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17055?: CVE-2018-17055 affects Progress Sitefinity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-17055?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-17055 published?: CVE-2018-17055 was published on 2018-09-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:progress:sitefinity:*:*:*:*:*:*:*:*

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