CVE-2020-21817

A null pointer dereference issue exists in GNU LibreDWG 0.10.2641 via htmlescape ../../programs/escape.c:29. which causes a denial of service (application crash).

CVSS v3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v2.0

4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P

EPSS

0.91% chance of exploitation in the next 30 days, 58th percentile

Published

2021-05-17

Updated

2026-07-09

Proof-of-concept exploits (1)

• LibreDWG/libredwg/issues/182#issue-547887727

References

• CVE Record
• NVD entry

Related

• CVE-2020-21816
• CVE-2020-21818
• CVE-2020-21815
• CVE-2020-21819
• CVE-2020-21814
• CVE-2020-21827