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CVE-2017-17878

28
FAUCET Score

CVE-2017-17878 describes a critical vulnerability in Valve Steam Link build 643 and its firmware, where root passwords exceeding 8 characters are truncated due to the default use of DES encryption. This flaw allows for unauthenticated remote attackers to gain full control over affected devices, leading to complete compromise of confidentiality, integrity, and availability. Despite its critical CVSS score of 9.8, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 644CPE matchmatch criteria
cpe:2.3:o:valvesoftware:steam_link_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.60%
Probability of exploitation in next 30 days
EPSS Percentile
73.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0160 is in the 61st percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

blogger.davidmanouchehri.com / 2017/12/steam-link-security-truncated-password.html
Issue TrackingPatchThird Party Advisory
github.com / ValveSoftware/steamlink-sdk/issues/101
Issue TrackingPatchThird Party Advisory
github.com / ValveSoftware/steamlink-sdk/issues/110
Issue TrackingPatchThird Party Advisory