Medium severity · published Jan 21, 2026
CVE-2026-23955
EVerest vulnerable to concatenation of strings literal and integers
4.2
CVSS
0.2%
EPSS
No
On KEV
Description
EVerest is an EV charging software stack. Prior to version 2025.9.0, in several places, integer values are concatenated to literal strings when throwing errors. This results in pointers arithmetic instead of printing the integer value as expected, like most of interpreted languages. This can be used by malicious operator to read unintended memory regions, including the heap and the stack. Version 2025.9.0 fixes the issue.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EV
everest-core · EVerest
< 2025.9.0 · source: vendor
EV
Everest · Linuxfoundation
before 2025.9.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23955
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23955
Exploit
https://github.com/EVerest/everest-core/security/advisories/GHSA-px57-jx97-hrff
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