CVE-2025-68136
Published: 21 January 2026
Summary
CVE-2025-68136 is a high-severity Allocation of Resources Without Limits or Throttling (CWE-770) vulnerability in Linuxfoundation Everest. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 16.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-2 (Flaw Remediation) and SI-11 (Error Handling).
Deeper analysis
CVE-2025-68136 is a null pointer dereference vulnerability (CWE-770) in the EVerest EV charging software stack, affecting versions prior to 2025.10.0. The flaw resides in the module handling SDP requests for ISO15118-20 communications. Upon receiving an SDP request, the module instantiates new Session and IConnection objects, opens a new TCP socket, and registers callbacks for the associated file descriptor without closing or destroying the prior ones. The previous Session is not preserved, leading to the loss of its unique_ptr and destruction of connection data. If the socket's file descriptor is not the last one, this triggers a null pointer dereference.
Attackers on an adjacent network (AV:A) can exploit the vulnerability with low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). Successful exploitation changes scope (S:C) and causes high-impact availability disruption (A:H) with no confidentiality or integrity effects (C:N/I:N), resulting in a denial of service through application crash. The CVSS v3.1 base score is 7.4.
The GitHub security advisory (GHSA-4h8h-x5cp-g22r) at https://github.com/EVerest/everest-core/security/advisories/GHSA-4h8h-x5cp-g22r confirms the issue and states that version 2025.10.0 resolves it by addressing the object management and file descriptor handling. Security practitioners should prioritize upgrading affected EVerest deployments.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-206318
Vulnerability details
EVerest is an EV charging software stack. Prior to version 2025.10.0, once the module receives a SDP request, it creates a whole new set of objects like `Session`, `IConnection` which open new TCP socket for the ISO15118-20 communications and registers…
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callbacks for the created file descriptor, without closing and destroying the previous ones. Previous `Session` is not saved and the usage of an `unique_ptr` is lost, destroying connection data. Latter, if the used socket and therefore file descriptor is not the last one, it will lead to a null pointer dereference. Version 2025.10.0 fixes the issue.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Null pointer dereference in SDP request handler directly enables application crash via crafted network request (T1499.004 Application or System Exploitation).
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires timely application of the vendor patch (v2025.10.0) that corrects the Session/IConnection object and file-descriptor lifecycle bug causing the null dereference.
Enforces memory-protection mechanisms that can detect or block invalid pointer dereferences before they produce an availability-impacting crash.
Requires robust error-handling paths that would gracefully manage the unexpected null Session pointer instead of dereferencing it on subsequent SDP requests.