HOMEVULNERABILITIESCVE-2017-5539
CRITICAL

CVE-2017-5539

CWE-22Published: January 23, 2017· Updated: Jun 17, 2026

9.1
CVSS v3.1

Official Description

The patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability. An attacker can use ..\/ to bypass the filter rule. Then, this attacker can exploit this vulnerability to delete or read any files on the server. It can also be used to determine whether a file exists.

NVD Source

Technical Analysis

CVE-2017-5539 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), with a CVSS base score of 9.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Vendors & Products

b2evolution1 product(s)
b2evolution
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
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Official Patches & Advisories

PATCHhttp://b2evolution.net/downloads/6-8-5
PATCHhttps://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48a
PATCHhttps://github.com/b2evolution/b2evolution/issues/36
PATCHhttp://b2evolution.net/downloads/6-8-5
PATCHhttps://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48a
PATCHhttps://github.com/b2evolution/b2evolution/issues/36
ADVISORYhttp://www.securityfocus.com/bid/95700
ADVISORYhttp://www.securityfocus.com/bid/95700

All References (8)

→
http://b2evolution.net/downloads/6-8-5Patch · Vendor Advisory
→
http://www.securityfocus.com/bid/95700Third Party Advisory · VDB Entry
→
https://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48aIssue Tracking · Patch · Third Party Advisory
→
https://github.com/b2evolution/b2evolution/issues/36Issue Tracking · Patch · Third Party Advisory
→
http://b2evolution.net/downloads/6-8-5Patch · Vendor Advisory
→
http://www.securityfocus.com/bid/95700Third Party Advisory · VDB Entry
→
https://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48aIssue Tracking · Patch · Third Party Advisory
→
https://github.com/b2evolution/b2evolution/issues/36Issue Tracking · Patch · Third Party Advisory

Quick Facts

CVE IDCVE-2017-5539
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedJan 23, 2017

Related CVEs (CWE-22)

CVE-2010-5323
10.0
CVE-2010-5324
10.0
CVE-2011-2653
10.0
CVE-2013-6221
10.0
CVE-2015-0779
10.0
CVE-2014-3914
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-5539 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. CVE data is provided under the NVD usage policy.
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