What is CVE-2022-44753?

CVE-2022-44753 is a critical-severity vulnerability in Hcl Software Notes, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-12-19.

How severe is CVE-2022-44753?

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

Buffer overflow in Hcl Software Notes

CVE-2022-44753

HCL Notes is susceptible to a stack based buffer overflow vulnerability in wp6sr.dll in Micro Focus KeyView. This could allow a remote unauthenticated attacker to crash the application or execute arbitrary code via a crafted WordPerfect file. This vulnerability applies to software previously licensed by IBM.

Vulnerability class: Buffer Overflow

Published 2022-12-19 · 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: 0.007 (50.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000

Affected products

Hcl Software Notes — versions 9, 10
Hcltech Notes — versions 9.0.1, 10.0.1

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

support.hcltechsw.com/csm (Vendor Advisory)

Frequently asked questions

What is CVE-2022-44753?: CVE-2022-44753 is a critical-severity vulnerability in Hcl Software Notes, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-12-19.
How severe is CVE-2022-44753?: Critical severity. CVSS v3 base score is 9.8 out of 10.