Security readout for executives and security teams
Plain-English summary
CVE-2021-4195 is a cross-site scripting issue in Firmanet Software and Technology Customer Relation Manager before 2022.03.13. A successful attack could let malicious content run in a user's browser after user interaction, potentially exposing limited data or changing page content. It is not listed as known exploited in KEV.
Executive priority
Treat this as a normal-priority remediation unless the CRM is internet-facing, business-critical, or used by privileged staff. It has credible browser-side risk, but the public evidence provided does not show active exploitation or critical system impact.
Technical view
The CVE describes improper input neutralization during web page generation, classified as CWE-79. The issue targets HTML attributes and has CVSS 3.1 score 6.1: network reachable, low complexity, no privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact.
Likely exposure
Exposure is limited to organizations using Firmanet Software and Technology Customer Relation Manager versions before 2022.03.13. Internet-facing CRM deployments and users who click crafted links or interact with attacker-controlled content would carry the most practical risk.
Exploitation context
The provided sources do not show active exploitation. The CVSS vector indicates exploitation requires user interaction but no prior authentication. The impact is browser-side data exposure or content manipulation rather than server takeover, based on the published XSS classification.
Researcher notes
Evidence is sparse beyond the CVE description, CVSS vector, CWE-79 classification, and affected-before version statement. One listed USOM reference is marked broken in the bundle. Avoid expanding affected scope without vendor confirmation.
Mitigation direction
- Identify any Firmanet Customer Relation Manager deployments.
- Confirm whether deployed versions are before 2022.03.13.
- Update to 2022.03.13 or later if vendor guidance confirms availability.
- Review vendor or government advisory guidance before applying compensating controls.
- Limit public exposure of affected CRM instances where practical.
Validation and detection
- Inventory CRM product name, vendor, and deployed version.
- Check whether the deployment is older than 2022.03.13.
- Review web application logs for suspicious CRM requests or unusual user reports.
- Confirm security testing covers reflected or stored XSS in HTML attributes.
- Verify remediation in a non-production environment before rollout.
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-79: 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 lookupCVE-2021-4195 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
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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
1 official scoreWe 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:C/C:L/I:L/A:N2.82.7TR-CERTVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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
- https://www.usom.gov.tr/bildirim/tr-23-0145CVE reference, TR-CERT · government-resource, broken-link
- https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0145CVE reference, TR-CERT · government-resource
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.