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CVE-2015-8949

31
FAUCET Score

CVE-2015-8949 is a critical use-after-free vulnerability in the my_login function of DBD::mysql versions prior to 4.033_01, affecting dbd-mysql_project and Debian Linux. This flaw allows attackers to achieve unspecified but potentially high impact (confidentiality, integrity, availability) by leveraging a call to mysql_errno after a failed my_login attempt. With a CVSS score of 9.8 (CRITICAL) and an EPSS percentile of 0.039, it is easily exploitable over the network with low attack complexity and no user interaction required. While there is no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and it's not in CISA KEV, the vulnerability has garnered significant community discussion with 10 mentions.

Impacted Technologies

VendorProductVersion(s)CPE
4.033CPE matchmatch criteria
cpe:2.3:a:dbd-mysql_project:dbd-mysql:4.033:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.49%
Probability of exploitation in next 30 days
EPSS Percentile
90.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0449 is in the 84th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-perl520-perl-DBD-MySQL

Vendor Advisories (1)

redhatCVE-2015-8949Low

perl-DBD-MySQL: Use after free when my_login fails

Nov 14, 2015

References

blog.fuzzing-project.org / 50-Use-after-free-in-my_login-function-of-DBDmysql-Perl-module.html
Third Party Advisory
github.com / perl5-dbi/DBD-mysql/blob/4.033_01/Changes
Release Notes
github.com / perl5-dbi/DBD-mysql/commit/cf0aa7751f6ef8445e9310a64b14dc81460ca156
Issue TrackingPatch
github.com / perl5-dbi/DBD-mysql/pull/45
Issue TrackingPatch
security.gentoo.org / glsa/201701-51
debian.org / security/2016/dsa-3635
Third Party Advisory
openwall.com / lists/oss-security/2016/07/25/13
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/07/27/1
Mailing ListThird Party Advisory
securityfocus.com / bid/92118