MEDIUM
CVE-2021-3800
CWE-200Published: August 23, 2022· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
A flaw was found in glib before version 2.63.6. Due to random charset alias, pkexec can leak content from files owned by privileged users to unprivileged ones under the right condition.
Technical Analysis
CVE-2021-3800 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.5.
From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (12)
→
https://access.redhat.com/security/cve/CVE-2021-3800Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1938284Issue Tracking · Patch · Third Party Advisory
→
https://gitlab.gnome.org/GNOME/glib/-/commit/3529bb4450a51995Patch · Vendor Advisory
→
https://lists.debian.org/debian-lts-announce/2022/09/msg00020.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20221028-0004/Third Party Advisory
→
https://www.openwall.com/lists/oss-security/2017/06/23/8Exploit · Mailing List · Patch · Third Party Advisory
→
https://access.redhat.com/security/cve/CVE-2021-3800Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1938284Issue Tracking · Patch · Third Party Advisory
→
https://gitlab.gnome.org/GNOME/glib/-/commit/3529bb4450a51995Patch · Vendor Advisory
→
https://lists.debian.org/debian-lts-announce/2022/09/msg00020.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20221028-0004/Third Party Advisory
→
https://www.openwall.com/lists/oss-security/2017/06/23/8Exploit · Mailing List · Patch · Third Party Advisory
Quick Facts
CVE IDCVE-2021-3800
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-200
CISA KEVNo
Affected3 vendor(s)
PublishedAug 23, 2022
Related CVEs (CWE-200)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-3800 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.