Security readout for executives and security teams
Plain-English summary
CVE-2021-33970 is reported as a critical buffer overflow in Qihoo 360 Chrome v13.0.2170.0 that could allow privilege escalation. The public record assigns the maximum CVSS score, but the affected-product metadata and remediation details are incomplete.
Executive priority
Treat as urgent where this specific browser version exists, because the official CVSS score is critical with full impact. Do not assume broad enterprise exposure without inventory evidence.
Technical view
The CVE describes a buffer overflow, while the listed CWE is CWE-843, type confusion. The CVSS vector indicates network attackability, low complexity, no privileges, no user interaction, scope change, and full confidentiality, integrity, and availability impact. Public sources do not name a patched version.
Likely exposure
Exposure is limited by the available evidence to environments running Qihoo 360 Chrome v13.0.2170.0. The CVE affected fields list vendor and product as n/a, so broader affected-version assumptions are not supported.
Exploitation context
The source bundle does not show CISA KEV listing or other cited evidence of active exploitation. Public references exist, but the bundle does not provide enough detail to confirm exploit maturity or real-world use.
Researcher notes
The record has conflicting weakness language: buffer overflow in the description, CWE-843 in metadata. Affected CPEs are absent, and no patch version is cited in the provided sources, so validation should focus on version presence and vendor confirmation.
Mitigation direction
- Inventory endpoints for Qihoo 360 Chrome v13.0.2170.0.
- Check Qihoo 360 vendor guidance for patched or supported versions.
- Remove or replace unsupported affected browser builds where feasible.
- Restrict use of untrusted web content on exposed affected systems.
- Prioritize endpoint monitoring around affected browser processes.
Validation and detection
- Confirm whether Qihoo 360 Chrome v13.0.2170.0 is installed.
- Record installed browser version and update channel.
- Review vendor advisories for this CVE before declaring remediation complete.
- Check vulnerability scanners for authenticated version detection.
- Look for unusual child processes or privilege changes from the browser.
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-843: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2021-33970 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
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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.
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:N/S:C/C:H/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://memorycorruptor.blogspot.com/p/vulnerabilities-disclosures.htmlCVE reference
- https://www.youtube.com/channel/UCLJ6fZxUqbmPe4jiwC6o4hg/CVE reference
- https://pastebin.com/Qug7tquWCVE reference
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.
Access of Resource Using Incompatible Type ('Type Confusion')
Access of Resource Using Incompatible Type ('Type Confusion') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.