Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2008-6393

44
FAUCET Score

CVE-2008-6393 describes a critical heap-based buffer overflow vulnerability in PSI Jabber client versions prior to 0.12.1, affecting various Jabber and Psi-IM products. This flaw allows remote attackers to trigger a denial of service (crash) and potentially execute arbitrary code by sending a malicious file transfer request containing a negative SOCKS5 option value, which bypasses an integer check and causes an overflow. With a CVSS score of 10.0, this vulnerability is highly severe, requiring no authentication and having complete impact on confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, a public exploit (EDB-7555) exists, though there is no evidence of active exploitation or significant community discussion surrounding this decade-old flaw.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.12CPE matchmatch criteria
cpe:2.3:a:psi-im:psi:*:*:*:*:*:*:*:*
0.1.0CPE matchmatch criteria
cpe:2.3:a:psi-im:psi:0.1.0:*:*:*:*:*:*:*
0.8.6CPE matchmatch criteria
cpe:2.3:a:psi-im:psi:0.8.6:*:*:*:*:*:*:*
0.8.7CPE matchmatch criteria
cpe:2.3:a:psi-im:psi:0.8.7:*:*:*:*:*:*:*
0.9CPE matchmatch criteria
cpe:2.3:a:psi-im:psi:0.9:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
18.20%
Probability of exploitation in next 30 days
EPSS Percentile
96.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-7555 · Dec 23, 2008
This CVE's current EPSS score of 0.1820 is in the 95th percentile among its peer group of 51,553 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, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Vendor Advisories (1)

redhatCVE-2008-6393Moderate

psi: remote DoS vulnerability

Dec 29, 2008

References

bugs.gentoo.org / show_bug.cgi
Exploit
jolmos.blogspot.com / 2008/12/psi-remote-integer-overflow.html
lists.opensuse.org / opensuse-security-announce/2009-03/msg00001.html
secunia.com / advisories/33311
Vendor Advisory
secunia.com / advisories/34119
secunia.com / advisories/34259
secunia.com / advisories/34301
sourceforge.net / project/shownotes.php
Patch
exploit-db.com / exploits/7555
redhat.com / archives/fedora-package-announce/2009-March/msg00071.html
redhat.com / archives/fedora-package-announce/2009-March/msg00080.html
debian.org / security/2009/dsa-1741
openwall.com / lists/oss-security/2009/02/25/5
Exploit
securityfocus.com / archive/1/499563
Exploit