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CVE-2014-4720

15
FAUCET Score

CVE-2014-4720 describes a denial-of-service vulnerability in the Email::Address Perl module versions prior to 1.904. This flaw, caused by an inefficient regular expression, allows remote attackers to consume excessive CPU resources through specially crafted input related to "backtracking into the phrase." With a CVSS score of 5.0 (medium severity), it is easily exploitable over the network with low attack complexity, leading to a partial availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.903CPE matchmatch criteria
cpe:2.3:a:email\:\:address_module_project:email\:\:address:*:*:*:*:*:perl:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:email\:\:address_module_project:email\:\:address:1.1:*:*:*:*:perl:*:*
1.2CPE matchmatch criteria
cpe:2.3:a:email\:\:address_module_project:email\:\:address:1.2:*:*:*:*:perl:*:*
1.3CPE matchmatch criteria
cpe:2.3:a:email\:\:address_module_project:email\:\:address:1.3:*:*:*:*:perl:*:*
1.5CPE matchmatch criteria
cpe:2.3:a:email\:\:address_module_project:email\:\:address:1.5:*:*:*:*:perl:*:*

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
1.86%
Probability of exploitation in next 30 days
EPSS Percentile
77.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0186 is in the 64th percentile among its peer group of 23,690 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

seclists.org / oss-sec/2014/q2/563
github.com / rjbs/Email-Address/blob/master/Changes