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CVE-2017-17762

37
FAUCET Score

CVE-2017-17762 is an XML External Entity (XXE) vulnerability affecting Episerver 7 patch 4 and earlier versions. This flaw allows unauthenticated remote attackers to read arbitrary files on the server by submitting a specially crafted XML request containing a malicious DTD to the util/xmlrpc/Handler.ashx endpoint. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with no user interaction or privileges required, leading to a high impact on confidentiality. While there is no evidence of active exploitation or Metasploit modules, Nuclei templates exist for detecting this blind XXE injection, and it has a high FAUCET Risk Score of 93/100, indicating its potential for abuse.

Impacted Technologies

VendorProductVersion(s)CPE
<= 7CPE matchmatch criteria
cpe:2.3:a:episerver:episerver:*:*:*:*:*:*:*:*
7CPE matchmatch criteria
cpe:2.3:a:episerver:episerver:7:*:*:*:*:*:*:*
7CPE matchmatch criteria
cpe:2.3:a:episerver:episerver:7:patch_1:*:*:*:*:*:*
7CPE matchmatch criteria
cpe:2.3:a:episerver:episerver:7:patch_2:*:*:*:*:*:*
7CPE matchmatch criteria
cpe:2.3:a:episerver:episerver:7:patch_3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.65%
Probability of exploitation in next 30 days
EPSS Percentile
90.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Nuclei: CVE-2017-17762 · Dec 18, 2025
This CVE's current EPSS score of 0.0465 is in the 84th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gist.github.com / jonaslejon/5f92779848360a1a1e676af0795bd9aa
ExploitThird Party Advisory
kryptera.se / sarbarhet-i-episerver
ExploitMitigationThird Party Advisory