Home
» Security vulnerabilities
» CVE-2021-46326
Moddable SDK v11.5.0 was discovered to contain a heap-buffer-overflow via the component __asan_memcpy.
NVD Status： Modified ，CVE State: published
Threat Intelligence & Risk Assessment for CVE-2021-46326
Conclusion & alert: CVE-2021-46326 is rated Exploit Available (59.4/100) : CVSS High severity, with low exploitation likelihood (EPSS 0.19%).Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB).Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
Public exploit references (Exploit-DB) for CVE-2021-46326
EDB-ID
Source
Kind
Published
Link
—
nvd_ref
exploit_tag
Exploit-DB ↗
Exploit prediction scoring system (EPSS) score for CVE-2021-46326
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
2025-03-30
0.29%
0.19%
-0.10%
2
2025-03-29
0.19%
0.29%
+0.10%
3
2025-03-17
—
0.19%
—
Full EPSS history
(6 records total)
Common vulnerability scoring system (CVSS) metrics for CVE-2021-46326
CVSS metrics for this CVE.
Base score
Version
Severity
Vector
Exploitability
Impact
Score source
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]
6.8
2.0
MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
8.6
6.4
[email protected]
Weakness enumeration for CVE-2021-46326
Affected software / configurations for CVE-2021-46326
Vendor
Product
Version
Raw CPE
moddable
moddable_sdk
11.5.0
cpe:2.3:a:moddable:moddable_sdk:11.5.0:*:*:*:*:*:*:*
References for CVE-2021-46326
cvelogic
Threat Intelligence