What is CVE-2022-27242?

CVE-2022-27242 is a medium-severity vulnerability in Siemens Openv2g, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2022-05-20.

How severe is CVE-2022-27242?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Siemens Openv2g

CVE-2022-27242

A vulnerability has been identified in OpenV2G (V0.9.4). The OpenV2G EXI parsing feature is missing a length check when parsing X509 serial numbers. Thus, an attacker could introduce a buffer overflow that leads to memory corruption.

Vulnerability class: Buffer Overflow

Published 2022-05-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (10.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Siemens Openv2g — versions 0.9.4, V0.9.4

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cert-portal.siemens.com/productcert/pdf/ssa-736385.pdf (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2022-27242?: CVE-2022-27242 is a medium-severity vulnerability in Siemens Openv2g, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2022-05-20.
How severe is CVE-2022-27242?: Medium severity. CVSS v3 base score is 5.5 out of 10.