CVE-2020-21838

HIGH

CVSS v3.1: 8.8 · EPSS: 0.0137 (68.6 percentile)

NetworkNo privilegesOut-of-bounds Write

Source data as of:

At a glance

Severity
HIGH
CVSS
8.8 v3.1 · NVD
EPSS
0.0137 (68.6 percentile) · FIRST.org
CISA KEV
No
Type
Out-of-bounds Write · NVD CWE
Attack conditions (CVSS vector)
NetworkNo privileges · Source: NVD Vector
Affected vendors
gnu
Published
2021-05-17 · Modified: 2026-07-05
References
Jump to references (3)

CVSS / EPSS / KEV

CVSS v3.1 8.8 / 10 HIGH Source: NVD
EPSS 0.0137 68.6 percentile Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

Description

A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via: read_2004_section_appinfo ../../src/decode.c:2842.

Record details

CVE ID
CVE-2020-21838
CVSS (v3.1)
8.8 (HIGH)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability subscore
2.8
Impact subscore
5.9
EPSS
0.0137 (68.6 percentile) — 2026-07-05
CISA KEV
No
Weakness (CWE)
CWE-787
Affected vendors
gnu
Affected configurations (CPE)
1
Published
2021-05-17
Modified
2026-07-05
Status
Modified

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same affected vendor

CVE-2020-21814 HIGH CVSS 8.8 CVE-2020-21816 HIGH CVSS 8.8 CVE-2020-21818 HIGH CVSS 8.8 CVE-2020-21819 HIGH CVSS 8.8

Same weakness type (CWE)

CVE-2022-32385 CRITICAL CVSS 9.8 CVE-2022-32386 CRITICAL CVSS 9.8 CVE-2022-33047 CRITICAL CVSS 9.8 CVE-2022-38555 CRITICAL CVSS 9.8

Published the same year

CVE-2020-22452 CRITICAL CVSS 9.8 CVE-2020-24193 CRITICAL CVSS 9.8 CVE-2020-24841 CRITICAL CVSS 9.8 CVE-2020-24913 CRITICAL CVSS 9.8
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