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CVE-2021-25856

17
FAUCET Score

CVE-2021-25856 is a file deletion vulnerability affecting pcmt superMicro-CMS version 3.11, allowing authenticated attackers to delete arbitrary files by uploading a specially crafted image file through images.php. With a CVSS score of 4.9 (Medium), this vulnerability requires high privileges (PR:H) but can be exploited over the network (AV:N) with low attack complexity (AC:L), leading to high integrity impact (I:H). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting a low immediate threat.

Impacted Technologies

VendorProductVersion(s)CPE
3.11CPE matchmatch criteria
cpe:2.3:a:supermicro-cms_project:supermicro-cms:3.11:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 34th percentile among its peer group of 3,562 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

github.com / pcmt/superMicro-CMS/issues/1
ExploitIssue Tracking