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CVE-2016-6225

16
FAUCET Score

CVE-2016-6225 describes a vulnerability in Percona XtraBackup versions before 2.3.6 and 2.4.5, where the xbcrypt utility fails to properly set the initialization vector (IV) for encryption. This flaw, an incomplete fix for CVE-2013-6394, allows context-dependent attackers to potentially obtain sensitive information from encrypted backup files through a chosen-plaintext attack. Rated as Medium severity (CVSS 5.9), it has a network attack vector with high attack complexity and high confidentiality impact, but no integrity or availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.3.5CPE matchmatch criteria
cpe:2.3:a:percona:xtrabackup:*:*:*:*:*:*:*:*
2.4.0CPE matchmatch criteria
cpe:2.3:a:percona:xtrabackup:2.4.0:rc1:*:*:*:*:*:*
2.4.1CPE matchmatch criteria
cpe:2.3:a:percona:xtrabackup:2.4.1:*:*:*:*:*:*:*
2.4.2CPE matchmatch criteria
cpe:2.3:a:percona:xtrabackup:2.4.2:*:*:*:*:*:*:*
2.4.3CPE matchmatch criteria
cpe:2.3:a:percona:xtrabackup:2.4.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.12%
Probability of exploitation in next 30 days
EPSS Percentile
62.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0112 is in the 25th percentile among its peer group of 19,955 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, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

lists.opensuse.org / opensuse-updates/2017-01/msg00125.html
Third Party Advisory
lists.opensuse.org / opensuse-updates/2017-01/msg00126.html
Third Party Advisory
bugs.launchpad.net / percona-xtrabackup/+bug/1643949
Issue TrackingPatchThird Party Advisory
github.com / percona/percona-xtrabackup/pull/266
Issue TrackingPatchThird Party Advisory
github.com / percona/percona-xtrabackup/pull/267
Issue TrackingPatchThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/BAHI6ETS22FJCMLW7A6SICFKQXF5G2VI
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/ZBVCP6KLFVGG6HSGLHLTMZRD6C4IJSZP
percona.com / blog/2017/01/12/cve-2016-6225-percona-xtrabackup-encryption-iv-not-set-properly
Vendor Advisory