CVE-2021-40226
High
Published: 10 November 2022
Published
10 November 2022
Modified
01 May 2025
KEV Added
—
Patch
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CVSS Score v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0053
67.4th percentile
Risk Priority
15
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-40226 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Glyphandcog Xpdfreader. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 32.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-27410
Vulnerability details
xpdfreader 4.03 is vulnerable to Buffer Overflow.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
glyphandcog
xpdfreader
4.03
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
addresses: CWE-787
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.