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CVE-2009-0544

40
FAUCET Score

CVE-2009-0544 describes a critical buffer overflow vulnerability within the PyCrypto ARC2 module version 2.0.1. This flaw allows remote attackers to trigger a denial of service and potentially execute arbitrary code by supplying an excessively large ARC2 key length. With a CVSS score of 10.0, it presents a severe risk, indicating network-based exploitation with low complexity, leading to complete compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog, public exploit code exists on ExploitDB, suggesting potential for exploitation, though there is no evidence of widespread active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.1CPE matchmatch criteria
cpe:2.3:a:pycrypto:arc2:2.0.1:*:*:*:*:*:*:*

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
11.52%
Probability of exploitation in next 30 days
EPSS Percentile
95.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-32780 · Feb 7, 2009
This CVE's current EPSS score of 0.1152 is in the 93rd 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

Vendor Advisories (1)

redhatCVE-2009-0544Moderate

python-crypto: buffer overflow in the ARC2 module

Feb 7, 2009

References

gitweb2.dlitz.net
gitweb2.dlitz.net
lists.opensuse.org / opensuse-security-announce/2009-05/msg00000.html
secunia.com / advisories/34199
secunia.com / advisories/35065
exchange.xforce.ibmcloud.com / vulnerabilities/48617
gentoo.org / security/en/glsa/glsa-200903-11.xml
mandriva.com / security/advisories
mandriva.com / security/advisories
openwall.com / lists/oss-security/2009/02/07/1
openwall.com / lists/oss-security/2009/02/12/5
securityfocus.com / bid/33674
Exploit