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CVE-2022-27447

26
FAUCET Score

CVE-2022-27447 is a use-after-free vulnerability affecting MariaDB Server versions 10.9 and below, specifically within the Binary_string::free_buffer() component. This high-severity vulnerability (CVSS 7.5) can be exploited remotely without authentication, potentially leading to denial-of-service, though it does not impact confidentiality or integrity. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.3.0, < 10.3.35CPE matchmatch criteria
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
>= 10.4.0, < 10.4.25CPE matchmatch criteria
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
>= 10.5.0, < 10.5.16CPE matchmatch criteria
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
>= 10.6.0, < 10.6.8CPE matchmatch criteria
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
>= 10.7.0, < 10.7.4CPE matchmatch criteria
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*

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:N/A:H

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

Exploit Intelligence

EPSS Score
2.25%
Probability of exploitation in next 30 days
EPSS Percentile
81.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0225 is in the 66th percentile among its peer group of 51,553 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

Patch Available

Vendor Patches (12)

microsoftpatch availablevia msrc
Product: 18704-16820Fixed in: 10.3.35-1
microsoftpatch availablevia msrc
Product: 18742-16823Fixed in: 10.6.8-1
microsoftpatch availablevia msrc
Product: cm1 mariadb 10.3.35-1 on CBL Mariner 1.0Fixed in: 10.3.35-1
microsoftpatch availablevia msrc
Product: cbl2 mariadb 10.6.8-1 on CBL Mariner 2.0Fixed in: 10.6.8-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportFixed in: mariadb:10.5-8040020231006044227.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceFixed in: mariadb:10.5-8040020231006044227.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsFixed in: mariadb:10.5-8040020231006044227.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: mariadb-3:10.5.16-2.el9_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mariadb105-mariadb-3:10.5.16-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mariadb103-mariadb-3:10.3.35-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: mariadb:10.5-8060020220614163302.ad008a3a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: mariadb:10.3-8060020220715055054.ad008a3a
View patch

Vendor Advisories (2)

microsoft2022-Apr/CVE-2022-27447Important

MariaDB Server v10.9 and below was discovered to contain a use-after-free via the component Binary_string::free_buffer() at /sql/sql_string.h.

Apr 12, 2022
redhatCVE-2022-27447Moderate

mariadb: use-after-poison in Binary_string::free_buffer

Nov 9, 2020

References

jira.mariadb.org / browse/MDEV-28099
ExploitIssue TrackingVendor Advisory
lists.debian.org / debian-lts-announce/2022/09/msg00023.html
Mailing ListThird Party Advisory
security.netapp.com / advisory/ntap-20220526-0006
Third Party Advisory