Security readout for executives and security teams
Plain-English summary
Zechat 1.5 has a SQL injection flaw in the hashtag parameter. An unauthenticated internet user could query backend database metadata and potentially sensitive information. The source bundle names public exploit material, but does not show CISA KEV listing or confirmed active exploitation.
Executive priority
Prioritize identification and containment of any Zechat 1.5 deployment. The vulnerability is remotely reachable without authentication and targets database confidentiality. Urgency is high, but confirmed active exploitation is not established by the provided sources.
Technical view
CVE-2018-25338 is CWE-89 SQL injection in Bylancer Zechat 1.5. The hashtag parameter is vulnerable to union-based SQL injection. CVSS 4.0 is 8.8 with network access, low complexity, no privileges, and no user interaction required.
Likely exposure
Exposure is likely limited to organizations running Bylancer Zechat version 1.5, especially if the affected hashtag functionality is internet-accessible. The bundle provides no CPEs, asset prevalence, hosting defaults, or vendor patch details.
Exploitation context
The source bundle cites ExploitDB and VulnCheck references, so public exploit information exists. It does not cite KEV status or another source confirming active exploitation in the wild. Treat reachable Zechat 1.5 instances as high-risk until assessed.
Researcher notes
Do not assume broader Bylancer products are affected. The evidence names Zechat 1.5 and the hashtag parameter only. The bundle does not provide patch status, affected CPEs, or exploit-in-the-wild confirmation beyond public exploit publication.
Mitigation direction
- Check Bylancer or Zechat guidance for a fixed release or official workaround.
- Upgrade, retire, or isolate Zechat 1.5 if no supported fix is available.
- Restrict public access to affected hashtag functionality where business permits.
- Use parameterized database queries if maintaining or patching the application code.
- Monitor web and database logs for suspicious hashtag requests.
Validation and detection
- Inventory internet-facing systems for Bylancer Zechat deployments.
- Confirm whether any deployment is version 1.5.
- Review hashtag parameter handling for unsafe SQL construction.
- Check whether affected routes require authentication or network restrictions.
- Review logs for unusual database enumeration patterns.
Public sources used
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-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. 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 lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-25338 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
- High
- CVSS
- 8.8 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA: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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N——VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N3.94.2VulnCheckVulnerability scoring details
Base CVSS 4.0 score
8.8HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 SQL Injection 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.