Security readout for executives and security teams
Plain-English summary
This is a critical Windows networking flaw in older Microsoft platforms. A remote attacker could send crafted UDP traffic to a closed port and potentially run code on the target system. The supplied bundle does not show active exploitation, but the impact is severe for any still-exposed legacy systems.
Executive priority
Treat this as high-priority legacy risk. The vulnerability is old, but any remaining affected systems represent severe remote-code-execution exposure and should be patched, isolated, or retired on an accelerated schedule.
Technical view
CVE-2011-2013 is an integer overflow in the Windows TCP/IP implementation, described as a reference counter overflow. A sequence of crafted UDP packets sent to a closed port may allow unauthenticated remote code execution on affected Windows Vista, Windows Server 2008, and Windows 7 versions.
Likely exposure
Exposure is most likely in legacy Windows Vista SP2, Windows Server 2008 SP2/R2/R2 SP1, and Windows 7 Gold/SP1 assets. Internet-facing or broadly reachable hosts are the primary concern, especially where UDP traffic can reach the system.
Exploitation context
The CVE record describes remote, unauthenticated arbitrary code execution through crafted UDP packets. The provided data says this CVE is not in KEV, and no cited source in the bundle confirms active exploitation.
Researcher notes
Evidence is sufficient for affected platform family, vulnerability class, impact, and vendor advisory linkage. The bundle does not provide exploit-in-the-wild evidence or detailed workaround text, so validation should rely on asset versioning, patch state, and vendor guidance.
Mitigation direction
- Review Microsoft MS11-083 and apply the vendor security update or guidance.
- Inventory affected legacy Windows versions across servers, workstations, and images.
- Prioritize remediation for externally reachable or high-trust network systems.
- Retire, isolate, or upgrade unsupported affected systems where patching is not viable.
Validation and detection
- Confirm whether assets run the affected Windows versions listed in the CVE description.
- Check patch status against Microsoft MS11-083 requirements.
- Use the referenced OVAL definition for configuration or vulnerability scanning where supported.
- Validate network exposure without sending crafted exploit traffic.
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-190: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2011-2013 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
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- MS11-083CVE reference · vendor-advisory, x_refsource_MS
- oval:org.mitre.oval:def:13877CVE reference · vdb-entry, signature
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.
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.