VulnerabilityModified
CVE-2021-3518
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.
HIGH 8.8EPSS 21.9%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 21.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 21.86% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- xmlsoft/libxml2 · debian/debian linux · redhat/jboss core services · redhat/enterprise linux · fedoraproject/fedora · netapp/active iq unified manager · netapp/clustered data ontap · netapp/clustered data ontap antivirus connector · netapp/manageability software development kit · netapp/ontap select deploy administration utility · netapp/snapdrive · netapp/hci h410c firmware · oracle/communications cloud native core network function cloud native environment · oracle/enterprise manager base platform · oracle/enterprise manager ops center · oracle/mysql workbench · oracle/peoplesoft enterprise peopletools · oracle/real user experience insight
- Source
- secalert@redhat.com
EPSS moved from 21.9% on 24 September 2026 to 21.9% on 3 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://seclists.org/fulldisclosure/2021/Jul/54Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Jul/55Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Jul/58Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Jul/59Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1954242Issue Tracking, Patch, Third Party Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/05/msg00008.htmlMailing List, Third 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.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlNot Applicable
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Jul/54Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Jul/55Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Jul/58Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Jul/59Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1954242Issue Tracking, Patch, Third Party Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/05/msg00008.htmlMailing List, Third 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.