CVE-2021-3998
HIGH
7.5
CVSS Score
Published: August 24, 2022 at 12:00 AM UTC
Updated: October 14, 2026 at 10:17 AM UTC
7 products affected across 2 vendorsH700S FirmwareH300S FirmwareH410S Firmware· also runs on 5 platforms
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
SSVC
No known exploit
Description
A flaw was found in glibc. The realpath() function can mistakenly return an unexpected value, potentially leading to information leakage and disclosure of sensitive data.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
2.33 ≤ v < 2.35
Affected range stops below 2.35, so it looks safe — our inference, not a vendor statement
All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (10)
Issue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2024633Third Party Advisory
Source: [email protected]
https://security-tracker.debian.org/tracker/CVE-2021-3998Third Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20221020-0003/Issue TrackingPatchThird Party Advisory
Source: [email protected]
https://sourceware.org/bugzilla/show_bug.cgi?id=28770Mailing ListPatchThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2022/01/24/4SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-125CWE-252
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