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CVE-2008-6899

34
FAUCET Score

CVE-2008-6899 describes multiple buffer overflow vulnerabilities in freeSSHd version 1.2.1. These flaws allow remote authenticated users to trigger a denial of service (crash) and potentially execute arbitrary code by sending excessively long SFTP commands such as open, unlink, mkdir, rmdir, or stat. With a CVSS score of 9.0 (Critical) and a FAUCET Risk Score of 96/100, this vulnerability presents a significant risk due to its network-based attack vector and low attack complexity, enabling complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog and showing no active exploitation or significant community discussion, a public exploit for a related 'rename' buffer overflow exists on ExploitDB, indicating the potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
1.2.1CPE matchmatch criteria
cpe:2.3:a:freesshd:freesshd:1.2.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.0HIGH

AV:N/AC:L/Au:S/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.29%
Probability of exploitation in next 30 days
EPSS Percentile
91.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-8295 · Mar 27, 2009
This CVE's current EPSS score of 0.0529 is in the 91st percentile among its peer group of 17,808 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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

exchange.xforce.ibmcloud.com / vulnerabilities/52434
bmgsec.com.au / advisories/freeSSHd-bof.txt
Exploit
securityfocus.com / archive/1/499486/100/0/threaded
securityfocus.com / bid/32972
Exploit