Security readout for executives and security teams
CVE-2018-17958 is a QEMU flaw in the emulated Realtek RTL8139 network device receive path. A malformed condition can trigger a buffer or out-of-bounds access issue caused by an incorrect integer type. The documented impact is denial of service, not data theft or code execution. Exposure is most likely on systems running vulnerable QEMU packages with the RTL8139 emulated NIC enabled. The source bundle does not provide precise upstream affected versions or CPEs, so confirm against distribution advisories and installed package versions. Prioritize remediation on virtualization infrastructure because a successful attack can disrupt availability of guest workloads. This is not described as a confidentiality breach in the provided sources, and there is no cited active exploitation evidence, but host reliability risk is material. Mitigation focus: Apply QEMU security updates from the relevant OS or platform vendor.; Check Debian, Ubuntu, and Red Hat advisories for fixed package versions.; Avoid RTL8139 emulated NICs where a safer supported virtual NIC is available..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2018-17958 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
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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:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- [qemu-devel] 20180926 [PULL 22/25] rtl8139: fix possible out of bound accessCVE reference · mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20190129 [SECURITY] [DLA 1646-1] qemu security updateCVE reference · mailing-list, x_refsource_MLIST
- USN-3826-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- DSA-4454CVE reference · vendor-advisory, x_refsource_DEBIAN
- 20190531 [SECURITY] [DSA 4454-1] qemu security updateCVE reference · mailing-list, x_refsource_BUGTRAQ
- RHSA-2019:2425CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2019:2553CVE reference · vendor-advisory, x_refsource_REDHAT
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.