What is the CVSS score of CVE-2026-23955?

CVE-2026-23955 has a CVSS 3.1 base score of 4.2 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Everest are affected by CVE-2026-23955?

Organizations using EVerest should be aware of moderate risk from CVE-2026-23955 rated CVSS 4.2. Exploitation could compromise the security of affected deployments.

Is there a public PoC exploit available for CVE-2026-23955?

Yes, a public proof-of-concept exploit is available for CVE-2026-23955. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-23955?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Everest CVE-2026-23955

MEDIUM

Creation of Immutable Text Using String Concatenation (CWE-1046)

2026-01-21 security-advisories@github.com

Information Disclosure Everest

4.2

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.2 MEDIUM

AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 06, 2026 - 21:21 vuln.today

Public exploit code

CVE Published

Jan 21, 2026 - 20:16 nvd

MEDIUM 4.2

DescriptionGitHub Advisory

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.

AnalysisAI

Everest EV charging software prior to version 2025.9.0 contains an improper pointer arithmetic flaw in error handling where integer values are concatenated to strings, allowing local operators with high privileges to read sensitive memory regions including heap and stack data. Public exploit code exists for this vulnerability. The flaw requires user interaction and is resolved in version 2025.9.0, though patches remain unavailable for affected earlier versions.

Technical ContextAI

Affects Everest. 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.