CVE-2021-45960
HIGH
8.8
CVSS Score
Published: January 1, 2022 at 06:47 PM UTC
Updated: October 14, 2026 at 01:17 PM UTC
8 products affected across 5 vendorsDebian LinuxActive IQ Unified ManagerOnCommand Workflow Automation
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Severity
HIGH8.8
Exploit prediction
EPSS 5%
SSVC
PoC
Description
In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%v < 2.4.3
Affected range stops below 2.4.3, so it looks safe — our inference, not a vendor statement
All versions
All versions
All versions
v < 3.1
Affected range stops below 3.1, so it looks safe — our inference, not a vendor statement
v < 8.15.310.0.0 ≤ v < 10.1.1
Affected range stops below 10.1.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.15.3, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (11)
Mailing Listx_refsource_MLISTExploitThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/01/17/3x_refsource_MISCIssue TrackingPermissions RequiredThird Party Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1217609x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdfx_refsource_MISCExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/libexpat/libexpat/issues/531x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/libexpat/libexpat/pull/534Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202209-24x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20220121-0004/Vendor Advisoryx_refsource_DEBIANIssue TrackingThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2022/dsa-5073SSVC — Action Prioritization
SSVCPoCNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
8.8HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-682
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