Security readout for executives and security teams
Plain-English summary
CVE-2018-25334 affects Bylancer Zechat 1.5. A malicious site or page could cause a logged-in user to submit unintended account changes despite CSRF token protections. Business risk is unauthorized modification of user information, not server takeover.
Executive priority
Treat as a moderate application-security issue. Prioritize if Zechat stores sensitive user data, is internet-facing, or supports privileged accounts. Escalate only if internal validation confirms exposure.
Technical view
The flaw is a CSRF issue in Zechat 1.5 involving the hashtag parameter. Public sources say encoded input can bypass anti-CSRF protection and allow unauthorized user data changes when a victim interacts with attacker-controlled content.
Likely exposure
Exposure appears limited to organizations running Bylancer Zechat 1.5. The source bundle lists no CPEs, no broader affected versions, and no confirmed hosted-service exposure.
Exploitation context
An ExploitDB entry exists, so public exploit information is available. The CVE is not marked KEV, and the supplied sources do not state active exploitation in the wild.
Researcher notes
Evidence identifies Zechat 1.5 and CWE-352. Sources do not provide a vendor patch version, CPE mapping, or active exploitation confirmation. Avoid assuming impact beyond unauthorized user data changes.
Mitigation direction
- Identify any Zechat 1.5 deployments and prioritize them for review.
- Check Bylancer or trusted advisory sources for fixed versions or official mitigation.
- Restrict access to affected administrative or profile-change functions where feasible.
- Consider retiring or isolating unsupported Zechat instances until vendor guidance is confirmed.
Validation and detection
- Inventory web applications for Bylancer Zechat 1.5 installations.
- Review account-change workflows for robust server-side CSRF validation.
- Check logs for unexpected user profile or account information changes.
- Confirm findings against CVE, VulnCheck, and ExploitDB references.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-25334 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N2.82.5VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
5.3MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-44685CVE reference, VulnCheck · exploit
- Official Product HomepageCVE reference, VulnCheck · product
- VulnCheck Advisory: Zechat 1.5 Cross-Site Request Forgery (CSRF) via hashtag parameterCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.