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CVE-2025-66551

19
FAUCET Score

CVE-2025-66551 describes a medium-severity vulnerability in Nextcloud Tables versions prior to 0.8.6 and 0.9.3, where an authenticated malicious user could manipulate column assignments, moving a column from their own table to a victim's table. The CVSS score of 4.3 indicates a low-complexity attack requiring user authentication over the network, with a potential impact of low integrity compromise. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.4.0, < 0.8.6CPE matchmatch criteria
cpe:2.3:a:nextcloud:tables:*:*:*:*:*:nextcloud:*:*
>= 0.9.0, < 0.9.3CPE matchmatch criteria
cpe:2.3:a:nextcloud:tables:*:*:*:*:*:nextcloud:*:*

CVSS Data

CVSS version used by this source: 3.1

6.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
2.1
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
12.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 12th percentile among its peer group of 21,974 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / nextcloud/security-advisories/security/advisories/GHSA-w787-vwqp-8wr7
Vendor Advisory
github.com / nextcloud/tables/commit/39f24a62fb41fd7a8bda65325f8bbafdc91c731c
Patch
github.com / nextcloud/tables/pull/1810
Issue TrackingPatch
hackerone.com / reports/3137895
Issue TrackingVendor Advisory