How severe is CVE-2017-17762?

CVE-2017-17762 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 high, integrity none, and availability none.

Is CVE-2017-17762 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-17762?

CVE-2017-17762 primarily affects Episerver. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-17762?

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-2017-17762 published?

CVE-2017-17762 was published on 2018-08-29 and last updated on 2026-06-17.

CVE-2017-17762

CVE-2017-17762 is a high-severity vulnerability in Episerver 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-611.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Episerver
Published: 2018-08-29
Last modified: 2026-06-17

Description

XML external entity (XXE) vulnerability in Episerver 7 patch 4 and earlier allows remote attackers to read arbitrary files via a crafted DTD in an XML request involving util/xmlrpc/Handler.ashx.

Frequently asked questions

What is CVE-2017-17762?: XML external entity (XXE) vulnerability in Episerver 7 patch 4 and earlier allows remote attackers to read arbitrary files via a crafted DTD in an XML request involving util/xmlrpc/Handler.ashx.
How severe is CVE-2017-17762?: CVE-2017-17762 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 high, integrity none, and availability none.
Is CVE-2017-17762 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-17762?: CVE-2017-17762 primarily affects Episerver. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-17762?: 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-2017-17762 published?: CVE-2017-17762 was published on 2018-08-29 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:episerver:episerver:*:*:*:*:*:*:*:*
cpe:2.3:a:episerver:episerver:7:*:*:*:*:*:*:*
cpe:2.3:a:episerver:episerver:7:patch_1:*:*:*:*:*:*
cpe:2.3:a:episerver:episerver:7:patch_2:*:*:*:*:*:*
cpe:2.3:a:episerver:episerver:7:patch_3:*:*:*:*:*:*
cpe:2.3:a:episerver:episerver:7:patch_4:*:*:*:*:*:*

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