Security readout for executives and security teams
Plain-English summary
FactoryTalk Linx 6.11 and earlier has a remotely reachable heap overflow that can disclose sensitive information. The disclosed data may help bypass ASLR, a memory protection. The source bundle does not provide a CVSS score, confirmed patch version, or evidence of active exploitation.
Executive priority
Treat as a targeted industrial exposure issue. Prioritize assets in production OT networks or remotely accessible environments, but do not assume active exploitation from the supplied evidence.
Technical view
CVE-2020-27255 is a CWE-122 heap overflow in FactoryTalk Linx 6.11 and prior. A remote, unauthenticated attacker could send malicious set attribute requests and trigger sensitive information disclosure. The stated impact is ASLR bypass support, not direct code execution in the provided record.
Likely exposure
Exposure is likely limited to environments running FactoryTalk Linx 6.11 or earlier, especially where affected services are reachable from untrusted or poorly segmented networks.
Exploitation context
The provided sources say the attack is remote and unauthenticated. CISA KEV status is false, and the bundle provides no cited evidence of active exploitation or public weaponization.
Researcher notes
The source bundle lacks CVSS metrics, patch identifiers, port details, and exploit telemetry. Analysis should stay scoped to FactoryTalk Linx 6.11 and prior and the documented information disclosure leading to possible ASLR bypass.
Mitigation direction
- Identify all FactoryTalk Linx deployments and versions.
- Check CISA and vendor guidance for fixed versions or mitigations.
- Prioritize remediation for versions 6.11 and prior.
- Restrict untrusted network reachability to affected systems.
- Monitor vendor advisories for updated remediation details.
Validation and detection
- Confirm whether FactoryTalk Linx 6.11 or earlier is installed.
- Map network paths to affected FactoryTalk Linx systems.
- Verify whether untrusted users can reach affected services.
- Review logs for unusual set attribute request activity.
- Track CISA KEV and vendor advisory updates.
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-122: 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-2020-27255 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://us-cert.cisa.gov/ics/advisories/icsa-20-329-01CVE reference · x_refsource_MISC
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.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.