CVE-2022-44751 | HCL Notes is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView

HCL Notes is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView. This could allow a remote unauthenticated attacker to crash the application or execute arbitrary code via a crafted Lotus Ami Pro file. This is different from the vulnerability described in CVE-2022-44755.  This vulnerability applies to software previously licensed by IBM.

Published: 2022-12-19 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-44751 is rated Moderate Risk (54.1/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.65%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-44751

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.80% 0.65% -1.16%
2 2026-04-03 4.42% 1.80% -2.62%
3 2025-12-29 — 4.42% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-44751

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2022-44751

Affected software / configurations for CVE-2022-44751

Vendor Product Version Raw CPE
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:-:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp10:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp10if1:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp10if10:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp10if2:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp10if3:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp10if4:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp10if5:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp10if6:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp10if7:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp10if8:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp1if1:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp1if2:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp2if1:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp2if2:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp2if3:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp2if4:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp3if1:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp3if2:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp3if3:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp3if4:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp4if1:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp4if2:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp5if1:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp5if2:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp5if3:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp7if1:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp7if2:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp8if1:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp9if1:*:*:*:*:*:*
hcltech notes 9.0.1 cpe:2.3:a:hcltech:notes:9.0.1:fp9if2:*:*:*:*:*:*
hcltech notes 10.0.1 cpe:2.3:a:hcltech:notes:10.0.1:-:*:*:*:*:*:*
hcltech notes 10.0.1 cpe:2.3:a:hcltech:notes:10.0.1:fp1:*:*:*:*:*:*
hcltech notes 10.0.1 cpe:2.3:a:hcltech:notes:10.0.1:fp2:*:*:*:*:*:*
hcltech notes 10.0.1 cpe:2.3:a:hcltech:notes:10.0.1:fp3:*:*:*:*:*:*
hcltech notes 10.0.1 cpe:2.3:a:hcltech:notes:10.0.1:fp4:*:*:*:*:*:*
hcltech notes 10.0.1 cpe:2.3:a:hcltech:notes:10.0.1:fp5:*:*:*:*:*:*
hcltech notes 10.0.1 cpe:2.3:a:hcltech:notes:10.0.1:fp6:*:*:*:*:*:*
hcltech notes 10.0.1 cpe:2.3:a:hcltech:notes:10.0.1:fp7:*:*:*:*:*:*

References for CVE-2022-44751

cvelogic Threat Intelligence