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CVE-2009-5153

33
FAUCET Score

CVE-2009-5153 is a critical stack buffer overflow vulnerability affecting Novell NetWare versions prior to 6.5 SP8, specifically within the NFS Portmapper daemon's handling of CALLIT RPC calls. This flaw allows remote, unauthenticated attackers to execute arbitrary code due to an incorrectly trusted length field. With a CVSS score of 9.8, it presents a high-impact threat to confidentiality, integrity, and availability, requiring no user interaction or complex attack conditions. Despite its severity, 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
<= 6.5CPE matchmatch criteria
cpe:2.3:a:microfocus:netware:*:*:*:*:*:*:*:*
6.5CPE matchmatch criteria
cpe:2.3:a:microfocus:netware:6.5:sp1:*:*:*:*:*:*
6.5CPE matchmatch criteria
cpe:2.3:a:microfocus:netware:6.5:sp2:*:*:*:*:*:*
6.5CPE matchmatch criteria
cpe:2.3:a:microfocus:netware:6.5:sp3:*:*:*:*:*:*
6.5CPE matchmatch criteria
cpe:2.3:a:microfocus:netware:6.5:sp4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
6.12%
Probability of exploitation in next 30 days
EPSS Percentile
92.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0612 is in the 87th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugzilla.suse.com / show_bug.cgi
Permissions RequiredThird Party Advisory
download.novell.com / Download
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-09-067
Third Party AdvisoryVDB Entry