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CVE-2017-5539

30
FAUCET Score

CVE-2017-5539 is a directory traversal bypass vulnerability affecting b2evolution version 6.8.4-stable, allowing attackers to read or delete arbitrary files and determine file existence. This critical vulnerability (CVSS 9.1) has a low attack complexity and does not require user interaction or privileges, posing a significant risk to confidentiality and integrity. Despite its severity, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
6.8.4CPE matchmatch criteria
cpe:2.3:a:b2evolution:b2evolution:6.8.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.17%
Probability of exploitation in next 30 days
EPSS Percentile
89.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0418 is in the 83rd percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

b2evolution.net / downloads/6-8-5
PatchVendor Advisory
github.com / b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48a
Issue TrackingPatchThird Party Advisory
github.com / b2evolution/b2evolution/issues/36
Issue TrackingPatchThird Party Advisory
securityfocus.com / bid/95700
Third Party AdvisoryVDB Entry