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CVE-2022-47021

25
FAUCET Score

CVE-2022-47021 describes a null pointer dereference vulnerability in the xiph opusfile library (versions 0.9 through 0.12), specifically within the op_get_data and op_open1 functions in opusfile.c. This flaw, rated 7.8 HIGH on the CVSS scale, can be exploited locally with low complexity to cause a denial of service or potentially other high impact consequences to confidentiality, integrity, and availability. While the vulnerability affects products like Fedora and xiph opusfile, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.9, <= 0.12CPE matchmatch criteria
cpe:2.3:a:xiph:opusfile:*:*:*:*:*:*:*:*
36CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
37CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 71st percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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 (3)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: cbl2 opusfile on CBL Mariner 2.0
microsoftpatch availablevia msrc
Product: 19658-16823

Vendor Advisories (1)

microsoft2023-Jan/CVE-2022-47021Important

A null pointer dereference issue was discovered in functions op_get_data and op_open1 in opusfile.c in xiph opusfile 0.9 thru 0.12 allows attackers to cause denial of service or other unspecified impacts.

Jan 10, 2023

References

github.com / xiph/opusfile/commit/0a4cd796df5b030cb866f3f4a5e41a4b92caddf5
PatchThird Party Advisory
github.com / xiph/opusfile/issues/36
ExploitIssue TrackingPatchThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/2ODIA6QRIRBNF2HRXOE5VCZ2AFP4ZB4R
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/4LIKBLOE433RA44YTYUZLED4IOWJG5DV
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/ED4CWLBR2WQ2IXXTHZ24UYZBRNCLMJXH
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/MYPAQANM2ZNPXRBFOS5NFXNJ7O4Q3OBD