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CVE-2004-0123

32
FAUCET Score

CVE-2004-0123 describes a double free vulnerability within the ASN.1 library affecting multiple Microsoft Windows operating systems, including NT 4.0, 2000, XP, and Server 2003. This flaw allows unauthenticated remote attackers to trigger a denial of service and potentially execute arbitrary code. With a CVSS score of 7.5, it is considered highly severe due to its network-based attack vector and low attack complexity, enabling significant impact on confidentiality, integrity, and availability. Despite its age and high FAUCET Risk Score, there is no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:*:*:*:*:*:*:*:*
r2CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:r2:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_98:*:gold:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_98se:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_me:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
29.75%
Probability of exploitation in next 30 days
EPSS Percentile
98.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2975 is in the 97th percentile among its peer group of 51,485 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

docs.microsoft.com / en-us/security-updates/securitybulletins/2004/ms04-011
exchange.xforce.ibmcloud.com / vulnerabilities/15713
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1007
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1076
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A924
ciac.org / ciac/bulletins/o-114.shtml
kb.cert.org / vuls/id/255924
PatchThird Party AdvisoryUS Government Resource
securityfocus.com / bid/10118
us-cert.gov / cas/techalerts/TA04-104A.html
Third Party AdvisoryUS Government Resource