CVE-2021-3518 @ Library

"CVE-2021-3518"
"libxml2-2.9.4+dfsg1-2.2+deb9u7"
"Am I vulnerable?"

Status

new

Priority

2.64

Match score

4.0

Risk

MemCorrupt Remote priv:user

CVSS

8.8 HIGH

Reason

cpe: libxml2; pkgs: libxml2; version: in-range: libxml2-2.9.4+dfsg1-2.2+deb9u7; risk:memory_corruption

Created

2026-10-15T10:20:41Z

Updated

2026-10-20T10:18:50Z

Package interrogation (copy)

Run on the host — click to copy a command. Debian/apt

Package	Commands
libxml2-2.9.4+dfsg1-2.2+deb9u7

Inventory lookup

Search package inventory across systems, then return here. Create a ticket on systems the matcher missed.

Suggestions: libxml2

System	Matches	Ticket for CVE-2021-3518
Archive	libxml2 2.9.4+dfsg1-7+deb10u6	new open
Janus	libxml2 2.9.4+dfsg1-7+deb10u6	new open
Library	libxml2 2.9.4+dfsg1-2.2+deb9u7	new open
Saiph	libxml2 2.9.4+dfsg1-7+deb10u6	new open
morris	alt-libxml2 2.10.2; alt-libxml2-devel 2.10.2; ea-libxml2 2.15.4; libxml2 2.9.1; libxml2-devel 2.9.1; libxml2-python 2.9.1	new open
mufasa	alt-libxml2 2.10.2; alt-python27-libxml2 2.9.2; ea-libxml2 2.15.4; libxml2 2.9.1; libxml2-devel 2.9.1; libxml2-python 2.9.1	new open
Bullseye	libxml2 2.9.10+dfsg-6.7+deb11u10	none
Helios	libxml2 2.9.10+dfsg-6.7+deb11u10	none
Matrix	libxml2 2.9.14+dfsg-1.3~deb12u6; libxml2-utils 2.9.14+dfsg-1.3~deb12u6	none
Silk	libxml2 2.9.14+dfsg-1.3~deb12u6	none

Same product CVEs in your queue

Other open tickets that look like the same product. Closed tickets are omitted unless they are already pegged to this CVE.

CVE	CVSS	Systems	Status	Matched	Already related
CVE-2021-3517	8.6	Archive, Janus, Library, Saiph, morris …	new	libxml2	—
CVE-2022-40304	7.8	Archive, Janus, Library, Saiph, morris …	new	libxml2	—
CVE-2024-34459	7.5	Archive, Janus, Library, Saiph, morris …	new	libxml2	—
CVE-2022-23308	7.5	Archive, Janus, Library, Saiph, morris …	new	libxml2	—
CVE-2022-40303	7.5	Archive, Janus, Library, Saiph, morris …	new	libxml2	—
CVE-2024-25062	7.5	Archive, Janus, Library, Saiph, morris …	new	libxml2	—

Related CVE (same fix)

Point this ticket’s CVE at a higher-priority / same-fix primary so you only triage one.

Host OS / kernel

Debian GNU/Linux 9 (stretch) (9) · debian

Arch

x86_64

kernel_release

uname -r → 4.9.0-19-amd64

kernel_version

uname -v → #1 SMP Debian 4.9.320-2 (2022-06-30)

For Linux kernel CVEs, kernel_version (Debian packaging / build string) often decides fixed vs not; kernel_release is used for upstream NVD range compares.

Same CVE on other hosts

Open the ticket for this CVE on another system.

System	Status	Priority	Updated
morris	new	8.8	2026-10-20T10:18:50Z	Open
mufasa	new	8.8	2026-10-20T10:18:50Z	Open
Archive	new	1.32	2026-10-20T10:18:50Z	Open
Janus	new	1.32	2026-10-20T10:18:50Z	Open
Saiph	new	1.32	2026-10-20T10:18:50Z	Open

Description

There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.

Update status

Add note only

References

NVD: CVE-2021-3518