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CVE-2017-17476

27
FAUCET Score

CVE-2017-17476 describes a critical session hijacking vulnerability in Open Ticket Request System (OTRS) versions 4.0.x (before 4.0.28), 5.0.x (before 5.0.26), and 6.0.x (before 6.0.3) when cookie support is disabled. An unauthenticated remote attacker can exploit this flaw by sending a specially crafted email to gain elevated privileges through web session hijacking. This vulnerability carries a high CVSS score of 8.8, indicating a severe impact with high confidentiality, integrity, and availability compromise, requiring user interaction. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0.0, < 4.0.28CPE matchmatch criteria
cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
>= 5.0.0, < 5.0.26CPE matchmatch criteria
cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
>= 6.0.0, < 6.0.3CPE matchmatch criteria
cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.22%
Probability of exploitation in next 30 days
EPSS Percentile
80.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0222 is in the 80th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / OTRS/otrs/commit/26707eaaa791648e6c7ad6aeaa27efd70e7c66eb
PatchThird Party Advisory
github.com / OTRS/otrs/commit/36e3be99cfe8a9e09afa1b75fdc39f3e28f561fc
PatchThird Party Advisory
github.com / OTRS/otrs/commit/720c73fbf53e476ca7dfdf2ae1d4d3d2aad2b953
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2017/12/msg00018.html
Mailing ListThird Party Advisory
debian.org / security/2017/dsa-4069
Third Party Advisory
otrs.com / security-advisory-2017-10-security-update-otrs-framework
PatchVendor Advisory