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CVE-2022-45496

20
FAUCET Score

CVE-2022-45496 is a buffer overflow vulnerability in the json_parse_string function of the sheredom json.h library, affecting versions prior to commit 0825301a07cbf51653882bf2b153cc81fdadf41. This flaw allows an authenticated local attacker to execute arbitrary code and achieve escalated privileges. With a CVSS score of 7.8 (HIGH), the vulnerability presents a significant risk due to its high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating a low current threat landscape.

Impacted Technologies

VendorProductVersion(s)CPE
< 2022-11-14CPE matchmatch criteria
cpe:2.3:a:json.h_project:json.h:*:*:*:*:*:*:*:*

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
0.56%
Probability of exploitation in next 30 days
EPSS Percentile
43.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0056 is in the 82nd percentile among its peer group of 16,994 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Remediation records are not available for this CVE.

References

github.com / hyrathon/trophies/security/advisories/GHSA-29hf-wrjw-2f28
Third Party Advisory
github.com / sheredom/json.h/issues/92
Third Party Advisory