HOMEVULNERABILITIESCVE-2021-35937
MEDIUM

CVE-2021-35937

CWE-59Published: August 25, 2022· Updated: Jun 17, 2026

6.4
CVSS v3.1

Official Description

A race condition vulnerability was found in rpm. A local unprivileged user could use this flaw to bypass the checks that were introduced in response to CVE-2017-7500 and CVE-2017-7501, potentially gaining root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

NVD Source

Technical Analysis

CVE-2021-35937 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.4.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Fedora1 product(s)
fedora
Red Hat1 product(s)
enterprise linux
rpm1 product(s)
rpm
Source: NVD CPE · 6 total CPE entries

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

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1964125
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1964125
ADVISORYhttps://access.redhat.com/security/cve/CVE-2021-35937
ADVISORYhttps://security.gentoo.org/glsa/202210-22
ADVISORYhttps://www.usenix.org/legacy/event/sec05/tech/full_papers/borisov/borisov.pdf
ADVISORYhttps://access.redhat.com/security/cve/CVE-2021-35937
ADVISORYhttps://security.gentoo.org/glsa/202210-22
ADVISORYhttps://www.usenix.org/legacy/event/sec05/tech/full_papers/borisov/borisov.pdf

All References (10)

→
https://access.redhat.com/security/cve/CVE-2021-35937Vendor Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1964125Issue Tracking · Patch · Vendor Advisory
→
https://rpm.org/wiki/Releases/4.18.0Release Notes
→
https://security.gentoo.org/glsa/202210-22Third Party Advisory
→
https://www.usenix.org/legacy/event/sec05/tech/full_papers/borisov/borisov.pdfExploit · Technical Description · Third Party Advisory
→
https://access.redhat.com/security/cve/CVE-2021-35937Vendor Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1964125Issue Tracking · Patch · Vendor Advisory
→
https://rpm.org/wiki/Releases/4.18.0Release Notes
→
https://security.gentoo.org/glsa/202210-22Third Party Advisory
→
https://www.usenix.org/legacy/event/sec05/tech/full_papers/borisov/borisov.pdfExploit · Technical Description · Third Party Advisory

Quick Facts

CVE IDCVE-2021-35937
CVSS Score6.4 / 10
SeverityMEDIUM
WeaknessCWE-59
CISA KEVNo
Affected3 vendor(s)
PublishedAug 25, 2022

Related CVEs (CWE-59)

CVE-2014-4480
10.0
CVE-2002-2374
10.0
CVE-2024-28185
10.0
CVE-2024-28189
10.0
CVE-2026-7374
9.9
CVE-2018-5225
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-35937 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.COM. CVE data is provided under the NVD usage policy.
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