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CVE-2016-2381

29
FAUCET Score

CVE-2016-2381 describes a vulnerability in Perl that allows attackers to bypass its taint protection mechanism in child processes by manipulating duplicate environment variables. This high-severity vulnerability (CVSS 7.5) is network-exploitable with low attack complexity, potentially leading to high integrity impacts, though it does not affect confidentiality or availability. Despite its high FAUCET Risk Score, there is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.23.9CPE matchmatch criteria
cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
7.5CPE matchmatch criteria
cpe:2.3:a:oracle:communications_billing_and_revenue_management:7.5:*:*:*:*:*:*:*
< 12.1.2.0.4CPE matchmatch criteria
cpe:2.3:a:oracle:configuration_manager:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
9.01%
Probability of exploitation in next 30 days
EPSS Percentile
94.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0901 is in the 91st percentile among its peer group of 51,485 CVEs.

Social Chatter

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 Patches (6)

redhatend of lifevia redhat_api
Product: Red Hat Directory Server 8Fixed in: perl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: perl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: perl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: perl
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: perl516-perl
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-perl520-perl

Vendor Advisories (1)

redhatCVE-2016-2381Moderate

perl: ambiguous environment variables handling

Mar 1, 2016

References

lists.opensuse.org / opensuse-updates/2016-03/msg00112.html
Mailing ListThird Party Advisory
perl5.git.perl.org / perl.git/commitdiff/ae37b791a73a9e78dedb89fb2429d2628cf58076
Vendor Advisory
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
Third Party Advisory
security.gentoo.org / glsa/201701-75
Third Party Advisory
oracle.com / security-alerts/cpuapr2020.html
Third Party Advisory
oracle.com / security-alerts/cpujul2020.html
Third Party Advisory
debian.org / security/2016/dsa-3501
Third Party Advisory
gossamer-threads.com / lists/perl/porters/326387
Third Party Advisory
oracle.com / technetwork/security-advisory/cpujul2017-3236622.html
Third Party Advisory
oracle.com / technetwork/security-advisory/cpuoct2017-3236626.html
Third Party Advisory
oracle.com / technetwork/topics/security/bulletinjul2016-3090568.html
Third Party Advisory
securityfocus.com / bid/83802
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2916-1
Third Party Advisory