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CVE-2017-3158

20
FAUCET Score

CVE-2017-3158 describes a race condition in Apache Guacamole versions 0.9.5 through 0.9.10-incubating. This flaw allows overlapping writes of printed data in the terminal emulator, potentially causing misinterpretation of packet lengths and subsequent buffer overflows. Rated with a CVSS score of 8.1 (High), the vulnerability is remotely exploitable with high impact on confidentiality, integrity, and availability, though it requires high attack complexity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.9CPE matchmatch criteria
cpe:2.3:a:apache:guacamole:*:*:*:*:*:*:*:*
0.9.10-incubatingCPE matchmatch criteria
cpe:2.3:a:apache:guacamole:0.9.10-incubating:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.22%
Probability of exploitation in next 30 days
EPSS Percentile
65.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0122 is in the 26th percentile among its peer group of 8,914 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: org.apache.guacamole:guacamole-commonFixed in: 0.9.11-incubating

Vendor Advisories (1)

mavenGHSA-3vv3-585q-wv6xhigh

Apache Guacamole Race Condition vulnerability

May 14, 2022

References

lists.apache.org / thread.html/b218d36bfdaf655d27382daec4dcd02ec717631f4aee8b7e4300ad65%40%3Cuser.guacamole.apache.org%3E