CVE-2022-45491
CVE-2022-45491 is a high-severity vulnerability in Json.h Project Json.h with a CVSS 3.x base score of 7.8. 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-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (17th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Json.h Project Json.h
- Published:
- Last modified:
Description
Buffer overflow vulnerability in function json_parse_value in sheredom json.h before commit 0825301a07cbf51653882bf2b153cc81fdadf41 (November 14, 2022) allows attackers to code arbitrary code and gain escalated privileges.
Frequently asked questions
- What is CVE-2022-45491?
- Buffer overflow vulnerability in function json_parse_value in sheredom json.h before commit 0825301a07cbf51653882bf2b153cc81fdadf41 (November 14, 2022) allows attackers to code arbitrary code and gain escalated privileges.
- How severe is CVE-2022-45491?
- CVE-2022-45491 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2022-45491 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-45491?
- CVE-2022-45491 affects Json.h Project Json.h. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2022-45491?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2022-45491 published?
- CVE-2022-45491 was published on 2023-02-03 and last updated on 2026-06-17.
References
- https://github.com/hyrathon/trophies/security/advisories/GHSA-55fm-gm4m-3v3j
- https://github.com/sheredom/json.h/issues/94
Affected products (1)
- cpe:2.3:a:json.h_project:json.h:*:*:*:*:*:*:*:*
More vulnerabilities in Json.h Project Json.h
- CVE-2022-45496 — High (CVSS 7.8): Buffer overflow vulnerability in function json_parse_string in sheredom json.h before commit…
- CVE-2022-45493 — High (CVSS 7.8): Buffer overflow vulnerability in function json_parse_key in sheredom json.h before commit…
- CVE-2022-45492 — High (CVSS 7.8): Buffer overflow vulnerability in function json_parse_number in sheredom json.h before commit…
- CVE-2022-45494 — High (CVSS 7.8): Buffer overflow vulnerability in function json_parse_object in sheredom json.h before commit…
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