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CVE-2008-1147

18
FAUCET Score

CVE-2008-1147 describes a weakness in a pseudo-random number generator (PRNG) algorithm, "Algorithm X2," used across various BSD-based operating systems including OpenBSD, Mac OS X, FreeBSD, and DragonFlyBSD. An attacker can predict sensitive values like IP fragmentation IDs by observing previously generated numbers, enabling potential TCP packet injection and OS fingerprinting. With a CVSS score of 6.8, this vulnerability is remotely exploitable with medium attack complexity, leading to partial confidentiality, integrity, and availability impacts. There is no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
10.0.3CPE matchmatch criteria
cpe:2.3:a:cosmicperl:directory_pro:10.0.3:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:darwin:darwin:1.0:*:*:*:*:*:*:*
9.1CPE matchmatch criteria
cpe:2.3:a:darwin:darwin:9.1:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:navision:financials_server:3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.77%
Probability of exploitation in next 30 days
EPSS Percentile
75.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0177 is in the 55th percentile among its peer group of 19,954 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, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

seclists.org / bugtraq/2008/Feb/0052.html
seclists.org / bugtraq/2008/Feb/0063.html
secunia.com / advisories/28819
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/40329
exchange.xforce.ibmcloud.com / vulnerabilities/41155
freebsd.org / cgi/cvsweb.cgi/src/sys/netinet/ip_id.c
securiteam.com / securityreviews/5PP0H0UNGW.html
securityfocus.com / archive/1/487658
securityfocus.com / bid/27647
trusteer.com / docs/OpenBSD_DNS_Cache_Poisoning_and_Multiple_OS_Predictable_IP_ID_Vulnerability.pdf