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CVE-2001-0740

23
FAUCET Score

CVE-2001-0740 describes a denial-of-service vulnerability in 3COM OfficeConnect 812 and 840 ADSL Routers running OCR812 router software 1.1.9 and earlier. Remote attackers can exploit this by sending a crafted string containing numerous "%s" characters, potentially triggering a format string vulnerability. This vulnerability is rated Medium severity (CVSS 5.0), indicating it can be exploited remotely with low complexity and no authentication, leading to a partial denial of service. While not listed on the CISA KEV catalog or having Metasploit/Nuclei modules, an ExploitDB entry (EDB-20847) exists, suggesting proof-of-concept code is publicly available. There is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.1.9CPE matchmatch criteria
cpe:2.3:h:3com:3c840-us:*:*:*:*:*:*:*:*
<= 1.1.9CPE matchmatch criteria
cpe:2.3:h:3com:3cp4144:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.05%
Probability of exploitation in next 30 days
EPSS Percentile
89.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-20847 · Sep 21, 2001
This CVE's current EPSS score of 0.0405 is in the 86th percentile among its peer group of 23,701 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, 0.0 Mastodon, and 0.4 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

archives.neohapsis.com / archives/bugtraq/2001-05/0115.html
ExploitVendor Advisory
marc.info
marc.info
exchange.xforce.ibmcloud.com / vulnerabilities/6573
securityfocus.com / bid/2721
ExploitPatchVendor Advisory