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CVE-2023-30576

25
FAUCET Score

CVE-2023-30576 is a critical use-after-free vulnerability affecting Apache Guacamole versions 0.9.10 through 1.5.1, specifically within the RDP audio input buffer handling. This flaw could enable an unauthenticated attacker to achieve arbitrary code execution with guacd process privileges due to timing-dependent memory referencing. With a CVSS score of 8.1 (HIGH), it presents a significant risk, though its exploitability is considered high complexity. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.9.0, < 1.5.2CPE matchmatch criteria
cpe:2.3:a:apache:guacamole:*:*:*:*:*:*:*:*
>= 0.9.10, <= 1.5.1CPE match
cpe:2.3:a:apache:guacamole:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.8MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.11%
Probability of exploitation in next 30 days
EPSS Percentile
62.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0111 is in the 25th percentile among its peer group of 8,918 CVEs.

Social Chatter

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

Remediation

Remediation records are not available for this CVE.

References

lists.apache.org / thread/vgtvxb3w7mm84hx6v8dfc0onsoz05gb6
Mailing ListVendor Advisory