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CVE-2012-4445

20
FAUCET Score

CVE-2012-4445 describes a heap-based buffer overflow in the eap_server_tls_process_fragment function within the EAP authentication server of hostapd versions 0.6 through 1.0. This vulnerability allows remote attackers to trigger a denial of service (crash or abort) by sending a specially crafted EAP-TLS message with a small "TLS Message Length" and the "More Fragments" flag set. The vulnerability has a CVSS score of 4.3 (Medium), indicating a network-based attack with medium complexity and potential for partial availability impact. There is no impact on confidentiality or integrity. Currently, there is no evidence of active exploitation, nor are there known public exploit codes available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
0.6.0CPE matchmatch criteria
cpe:2.3:a:w1.fi:hostapd:0.6.0:*:*:*:*:*:*:*
0.6.1CPE matchmatch criteria
cpe:2.3:a:w1.fi:hostapd:0.6.1:*:*:*:*:*:*:*
0.6.2CPE matchmatch criteria
cpe:2.3:a:w1.fi:hostapd:0.6.2:*:*:*:*:*:*:*
0.6.3CPE matchmatch criteria
cpe:2.3:a:w1.fi:hostapd:0.6.3:*:*:*:*:*:*:*
0.6.4CPE matchmatch criteria
cpe:2.3:a:w1.fi:hostapd:0.6.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.22%
Probability of exploitation in next 30 days
EPSS Percentile
90.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0422 is in the 87th percentile among its peer group of 19,953 CVEs.

Social Chatter

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

Vendor Advisories (1)

redhatCVE-2012-4445Moderate

wpa_supplicant: DoS (abort) by processing certain fragmented EAP-TLS messages

Oct 8, 2012

References

osvdb.org / 86051
secunia.com / advisories/50805
Vendor Advisory
secunia.com / advisories/50888
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/79104
w1.fi / gitweb/gitweb.cgi
debian.org / security/2012/dsa-2557
freebsd.org / security/advisories/FreeBSD-SA-12:07.hostapd.asc
mandriva.com / security/advisories
openwall.com / lists/oss-security/2012/10/08/3
pre-cert.de / advisories/PRE-SA-2012-07.txt
securityfocus.com / bid/55826
securitytracker.com / id