HOMEVULNERABILITIESCVE-2021-4259
CRITICAL

CVE-2021-4259

CWE-597Published: December 19, 2022· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

A vulnerability was found in phpRedisAdmin up to 1.16.1. It has been classified as problematic. This affects the function authHttpDigest of the file includes/login.inc.php. The manipulation of the argument response leads to use of wrong operator in string comparison. Upgrading to version 1.16.2 is able to address this issue. The name of the patch is 31aa7661e6db6f4dffbf9a635817832a0a11c7d9. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-216267.

NVD Source

Technical Analysis

CVE-2021-4259 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

phpredisadmin_project1 product(s)
phpredisadmin
Source: NVD CPE · 1 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://github.com/erikdubbelboer/phpRedisAdmin/commit/31aa7661e6db6f4dffbf9a635817832a0a11c7d9
PATCHhttps://github.com/erikdubbelboer/phpRedisAdmin/commit/31aa7661e6db6f4dffbf9a635817832a0a11c7d9
ADVISORYhttps://github.com/erikdubbelboer/phpRedisAdmin/releases/tag/v1.16.2
ADVISORYhttps://vuldb.com/?id.216267
ADVISORYhttps://github.com/erikdubbelboer/phpRedisAdmin/releases/tag/v1.16.2
ADVISORYhttps://vuldb.com/?id.216267

All References (6)

→
https://github.com/erikdubbelboer/phpRedisAdmin/commit/31aa7661e6db6f4dffbf9a635817832a0a11c7d9Patch · Third Party Advisory
→
https://github.com/erikdubbelboer/phpRedisAdmin/releases/tag/v1.16.2Release Notes · Third Party Advisory
→
https://vuldb.com/?id.216267Permissions Required · Third Party Advisory · VDB Entry
→
https://github.com/erikdubbelboer/phpRedisAdmin/commit/31aa7661e6db6f4dffbf9a635817832a0a11c7d9Patch · Third Party Advisory
→
https://github.com/erikdubbelboer/phpRedisAdmin/releases/tag/v1.16.2Release Notes · Third Party Advisory
→
https://vuldb.com/?id.216267Permissions Required · Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2021-4259
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-597
CISA KEVNo
Affected1 vendor(s)
PublishedDec 19, 2022

Related CVEs (CWE-597)

CVE-2021-3797
9.8
CVE-2022-36072
5.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-4259 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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