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CVE-2005-0491

78
FAUCET Score

CVE-2005-0491 is a critical stack-based buffer overflow vulnerability affecting Knox Arkeia Server Backup versions 5.3.x, triggered by the improper handling of long type 77 requests. With a maximum CVSS score of 10.0, this flaw allows unauthenticated remote attackers to execute arbitrary code with low attack complexity, resulting in a complete compromise of system confidentiality, integrity, and availability. While there is no recent evidence of active campaigns or inclusion in the CISA Known Exploited Vulnerabilities catalog, the risk remains significant due to the public availability of functional exploit code within the Metasploit Framework and ExploitDB.

Impacted Technologies

VendorProductVersion(s)CPE
5.3.0CPE matchmatch criteria
cpe:2.3:a:knox_software:arkeia_server_backup:5.3.0:*:*:*:*:*:*:*
5.3.0_rc1CPE matchmatch criteria
cpe:2.3:a:knox_software:arkeia_server_backup:5.3.0_rc1:*:*:*:*:*:*:*
5.3.0_rc2CPE matchmatch criteria
cpe:2.3:a:knox_software:arkeia_server_backup:5.3.0_rc2:*:*:*:*:*:*:*
5.3.0_rc3CPE matchmatch criteria
cpe:2.3:a:knox_software:arkeia_server_backup:5.3.0_rc3:*:*:*:*:*:*:*
5.3.0_rc4CPE matchmatch criteria
cpe:2.3:a:knox_software:arkeia_server_backup:5.3.0_rc4:*:*:*:*:*:*:*

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
64.90%
Probability of exploitation in next 30 days
EPSS Percentile
99.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Arkeia Backup Client Type 77 Overflow (Win32) · Feb 18, 2005
ExploitDB: EDB-16865 · May 9, 2010
This CVE's current EPSS score of 0.6490 is in the 99th percentile among its peer group of 51,466 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

Remediation records are not available for this CVE.

References

marc.info
secunia.com / advisories/14327
PatchVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/19398
securityfocus.com / bid/12594
ExploitPatch