How severe is CVE-2011-0739?

CVE-2011-0739 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2011-0739 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0739?

CVE-2011-0739 primarily affects Mikel Lindsaar Mail. In total, 52 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0739?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-0739 published?

CVE-2011-0739 was published on 2011-02-02 and last updated on 2026-06-16.

CVE-2011-0739

CVE-2011-0739 is a medium-severity vulnerability in Mikel Lindsaar Mail with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Mikel Lindsaar Mail
Published: 2011-02-02
Last modified: 2026-06-16

Description

The deliver function in the sendmail delivery agent (lib/mail/network/delivery_methods/sendmail.rb) in Ruby Mail gem 2.2.14 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in an e-mail address.

Frequently asked questions

What is CVE-2011-0739?: The deliver function in the sendmail delivery agent (lib/mail/network/delivery_methods/sendmail.rb) in Ruby Mail gem 2.2.14 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in an e-mail address.
How severe is CVE-2011-0739?: CVE-2011-0739 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2011-0739 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0739?: CVE-2011-0739 primarily affects Mikel Lindsaar Mail. In total, 52 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-0739?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-0739 published?: CVE-2011-0739 was published on 2011-02-02 and last updated on 2026-06-16.

References

Affected products (52)

cpe:2.3:a:mikel_lindsaar:mail:*:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.2.6:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.2.7:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.2.8:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.2.9:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.3.1:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.3.2:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.3.3:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.3.4:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.3.5:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.4.3:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.5.0:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.5.4:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.1.2:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.1.3:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.1.5:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:mikel_lindsaar:mail:2.2.4:*:*:*:*:*:*:*

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