CVE-2023-53154
MEDIUM
5.5
CVSS Score
Published: May 23, 2025 at 12:00 AM UTC
Updated: June 17, 2026 at 06:44 AM UTC
1 product affected across 1 vendorCjson
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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
PoC
Description
parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 1.7.18
Affected range stops below 1.7.18, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
ExploitIssue TrackingVendor Advisory
Source: [email protected]
https://github.com/DaveGamble/cJSON/issues/800Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/06/msg00014.htmlSSVC — Action Prioritization
SSVCPoCNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-125
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