Is CVE-2015-9097 in the CISA KEV catalog?

No. CVE-2015-9097 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-9097?

CVE-2015-9097 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2015-9097?

CVE-2015-9097 has an EPSS score of 3.36% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-9097?

Upgrade ruby-mail on debian 11 to 2.6.1+dfsg1-1 or later.

CVE & CISA-KEV Catalog

CVE-2015-9097

MEDIUMEPSS 87th pctl

6.1

CVSS v3

NVD

Description

The mail gem before 2.5.5 for Ruby (aka A Really Ruby Mail Library) is vulnerable to SMTP command injection via CRLF sequences in a RCPT TO or MAIL FROM command, as demonstrated by CRLF sequences immediately before and after a DATA substring.

CWE-93

How to fix

Remediation Available

ruby-mailDebian

Fixed in:2.6.1+dfsg1-1CVE-2015-9097

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploit Intelligence

3.36%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Exploit1

github.com

Vendor Advisory1

rubysec.com

Third-Party Advisory5

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.