What is CVE-2020-22875?

CVE-2020-22875 is a critical-severity vulnerability in Jsish, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2021-07-13.

How severe is CVE-2020-22875?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Integer overflow in Jsish

CVE-2020-22875

Integer overflow vulnerability in function Jsi_ObjSetLength in jsish before 3.0.6, allows remote attackers to execute arbitrary code.

Vulnerability class: Integer Overflow

Published 2021-07-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.033 (87.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000

Affected products

Jsish

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

github.com/pcmacdon/jsish/commit/5408a6d93f45bf1f7acd9ae5d44e0ebd77379e98 (Patch, Third Party Advisory)
github.com/pcmacdon/jsish/issues/10 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-22875?: CVE-2020-22875 is a critical-severity vulnerability in Jsish, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2021-07-13.
How severe is CVE-2020-22875?: Critical severity. CVSS v3 base score is 9.8 out of 10.