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CVE-2021-32292

29
FAUCET Score

CVE-2021-32292 is a critical stack-buffer-overflow vulnerability (CWE-787) in the json-c library, specifically within the json_parse sample program's parseit function, affecting versions from 20200420 to 0.15-20200726, including NetApp Active IQ Unified Manager. With a CVSS score of 9.8, it allows unauthenticated remote attackers to achieve high impact on confidentiality, integrity, and availability with low attack complexity. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
0.15-20200726CPE matchmatch criteria
cpe:2.3:a:json-c:json-c:0.15-20200726:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
1.07%
Probability of exploitation in next 30 days
EPSS Percentile
61.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0107 is in the 47th percentile among its peer group of 36,862 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)

microsoftpatch availablevia msrc
Product: cbl2 json-c 0.15-2 on CBL Mariner 2.0Fixed in: 0.15-2
microsoftpatch availablevia msrc
Product: 19178-16823Fixed in: 0.15-2

Vendor Advisories (2)

redhatCVE-2021-32292

json-c: stack-buffer-overflow in parseit() in json_parse.c

Aug 22, 2023
microsoft2023-Aug/CVE-2021-32292Critical

An issue was discovered in json-c from 20200420 (post 0.14 unreleased code) through 0.15-20200726. A stack-buffer-overflow exists in the auxiliary sample program json_parse which is located in the function parseit.

Aug 8, 2023

References

github.com / json-c/json-c/issues/654
ExploitIssue Tracking
security.netapp.com / advisory/ntap-20230929-0010
Third Party Advisory
debian.org / security/2023/dsa-5486
Third Party Advisory