How severe is CVE-2016-6225?

CVE-2016-6225 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-6225 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6225?

CVE-2016-6225 primarily affects Percona Xtrabackup. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6225?

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

When was CVE-2016-6225 published?

CVE-2016-6225 was published on 2017-03-23 and last updated on 2026-06-17.

CVE-2016-6225

CVE-2016-6225 is a medium-severity vulnerability in Percona Xtrabackup with a CVSS 3.x base score of 5.9. 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-326.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-326
Affected product: Percona Xtrabackup
Published: 2017-03-23
Last modified: 2026-06-17

Description

xbcrypt in Percona XtraBackup before 2.3.6 and 2.4.x before 2.4.5 does not properly set the initialization vector (IV) for encryption, which makes it easier for context-dependent attackers to obtain sensitive information from encrypted backup files via a Chosen-Plaintext attack. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-6394.

Frequently asked questions

What is CVE-2016-6225?: xbcrypt in Percona XtraBackup before 2.3.6 and 2.4.x before 2.4.5 does not properly set the initialization vector (IV) for encryption, which makes it easier for context-dependent attackers to obtain sensitive information from encrypted backup files via a Chosen-Plaintext attack. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-6394.
How severe is CVE-2016-6225?: CVE-2016-6225 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-6225 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6225?: CVE-2016-6225 primarily affects Percona Xtrabackup. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6225?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-6225 published?: CVE-2016-6225 was published on 2017-03-23 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:percona:xtrabackup:*:*:*:*:*:*:*:*
cpe:2.3:a:percona:xtrabackup:2.4.0:rc1:*:*:*:*:*:*
cpe:2.3:a:percona:xtrabackup:2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:percona:xtrabackup:2.4.2:*:*:*:*:*:*:*
cpe:2.3:a:percona:xtrabackup:2.4.3:*:*:*:*:*:*:*
cpe:2.3:a:percona:xtrabackup:2.4.4:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*

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