MEDIUM
CVE-2018-11591
CWE-476Published: May 31, 2018· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
Espruino before 1.98 allows attackers to cause a denial of service (application crash) with a user crafted input file via a NULL pointer dereference during syntax parsing. This was addressed by adding validation for a debug trace print statement in jsvar.c.
Technical Analysis
CVE-2018-11591 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Vendors & Products
espruino1 product(s)
espruino
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (6)
→
https://github.com/espruino/Espruino/commit/b6d362f6a1f2de0b3e7604848116efb509196bf4Patch · Vendor Advisory
→
https://github.com/espruino/Espruino/files/2015612/test.txtExploit · Vendor Advisory
→
https://github.com/espruino/Espruino/issues/1420Issue Tracking · Vendor Advisory
→
https://github.com/espruino/Espruino/commit/b6d362f6a1f2de0b3e7604848116efb509196bf4Patch · Vendor Advisory
→
https://github.com/espruino/Espruino/files/2015612/test.txtExploit · Vendor Advisory
→
https://github.com/espruino/Espruino/issues/1420Issue Tracking · Vendor Advisory
Quick Facts
CVE IDCVE-2018-11591
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-476
CISA KEVNo
Affected1 vendor(s)
PublishedMay 31, 2018
Related CVEs (CWE-476)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-11591 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.