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CVE-2021-33256

70
FAUCET Score

CVE-2021-33256 describes a CSV injection vulnerability in ManageEngine ADSelfService Plus version 6.1 Build 6101, specifically within the login panel's j_username parameter. This high-severity vulnerability (CVSS 8.8) could allow an unauthenticated attacker to achieve a reverse shell if a privileged user exports the "User Attempts Audit Report" as a CSV file. While the vendor disputes its validity, the attack requires user interaction (UI:R) but has low attack complexity (AC:L) and no authentication (PR:N), leading to high confidentiality, integrity, and availability impacts (C:H/I:H/A:H). Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
6.1CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:6.1:6101:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
79.00%
Probability of exploitation in next 30 days
EPSS Percentile
99.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.7900 is in the 100th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.unsafe-inline.com / 0day/manageengine-adselfservice-plus-6.1-csv-injection
ExploitThird Party Advisory