CVE-2021-3518

Home/CVE/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

CVE

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

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.

HIGH · CVSS 8.8 EPSS 0.0025

Schedule remediation

CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

⬡

Weakness Classification

CWE-416Use After Free

▤

Affected Products & Versions

xmlsoft libxml2< 2.9.11
debian linuxall versions
redhat jboss core servicesall versions
redhat enterprise linuxall versions
fedoraproject fedoraall versions
netapp active iq unified managerall versions
netapp clustered data ontapall versions
netapp clustered data ontap antivirus connectorall versions
Show all 18 affected productsnetapp manageability software development kitall versions
netapp ontap select deploy administration utilityall versions
netapp snapdriveall versions
netapp hci h410c firmwareall versions
oracle communications cloud native core network function cloud native environmentall versions
oracle enterprise manager base platformall versions
oracle enterprise manager ops centerall versions
oracle mysql workbench<= 8.0.26
oracle peoplesoft enterprise peopletoolsall versions
oracle real user experience insightall versions

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Affected Packages

Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.

RubyGems nokogiri HIGH fixed in 1.11.4

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Scoring & Timeline

8.8

HIGH · CVSS v3.1 · secalert@redhat.com

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD18 May 2021 · 12:15 PM

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

⚑

Vendor Advisories

suse-csafopenSUSE-SU-2026:10356-1
suse-csafopenSUSE-SU-2025:14697-1
suse-csafopenSUSE-SU-2024:14174-1
suse-csafopenSUSE-SU-2024:11016-1
suse-csafopenSUSE-SU-2024:11340-1
Show all 24 vendor advisoriessuse-csafopenSUSE-SU-2024:11912-1
suse-csafopenSUSE-SU-2024:13165-1
siemens-csafSSA-398330
rhsaRHSA-2022:1389Important
rhsaRHSA-2022:1390Important
usnUSN-4991-1
msrcCVE-2021-3518
suse-csafopenSUSE-SU-2021:0764-1
suse-csafSUSE-SU-2021:14729-1
suse-csafSUSE-SU-2021:1654-1
suse-csafSUSE-SU-2021:1658-1
rhsaRHSA-2021:2569Moderate
rhsaRHBA-2021:2854Moderate
suse-csafopenSUSE-SU-2021:0692-1
suse-csafSUSE-SU-2021:1523-1
suse-csafSUSE-SU-2021:1524-1
oracle-cpuoracle-cpu-Enterprise-Manager-Base-Platform-1370--CVE-2021-3518
cisa-csafcisa-csaf-csaf_files-OT-white-2021-icsa-21-336-06
cisa-csafcisa-csaf-csaf_files-OT-white-2023-icsa-23-348-10

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://seclists.org/fulldisclosure/2021/Jul/54Mailing ListThird Party Advisory

http://seclists.org/fulldisclosure/2021/Jul/55Mailing ListThird Party Advisory

http://seclists.org/fulldisclosure/2021/Jul/58Mailing ListThird Party Advisory

http://seclists.org/fulldisclosure/2021/Jul/59Mailing ListThird Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1954242Issue TrackingPatchThird Party Advisory

https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E

Show all 19 references

https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E

https://lists.debian.org/debian-lts-announce/2021/05/msg00008.htmlMailing ListThird Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/

https://security.gentoo.org/glsa/202107-05Third Party Advisory

https://security.netapp.com/advisory/ntap-20210625-0002/Third Party Advisory

https://support.apple.com/kb/HT212601Third Party Advisory

https://support.apple.com/kb/HT212602Third Party Advisory

https://support.apple.com/kb/HT212604Third Party Advisory

https://support.apple.com/kb/HT212605Third Party Advisory

https://www.oracle.com/security-alerts/cpuapr2022.htmlPatchThird Party Advisory

https://www.oracle.com/security-alerts/cpujul2022.htmlNot Applicable

https://www.oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory

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