CVE-2013-4535

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 1.0%, top 42% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

The virtqueue_map_sg function in hw/virtio/virtio.c in QEMU before 1.7.2 allows remote attackers to execute arbitrary files via a crafted savevm image, related to virtio-block or virtio-serial read.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
60%
KEV
Not listed

Published

February 11, 2020

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Aug 14, 2026
Patch available. Sources: redhat.
generic
http://rhn.redhat.com/errata/RHSA-2014-0743.html
generic

[Qemu-stable] [ANNOUNCE] QEMU 1.7.2 Stable released

http://lists.nongnu.org/archive/html/qemu-stable/2014-07/msg00187.html
generic

QEMU · GitLab

http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=36cf2a37132c7f01fa9adb5f95f5312b27742fd4
redhat Patch Available

1066401 – (CVE-2013-4535, CVE-2013-4536) CVE-2013-4535 CVE-2013-4536 qemu: virtio: insufficient validation of num_sg when mapping

Affected: Red Hat Enterprise Linux 5.

https://bugzilla.redhat.com/show_bug.cgi?id=1066401
generic
http://rhn.redhat.com/errata/RHSA-2014-0744.html

Vendor Advisories for CVE-2013-4535(6)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuqemu-utils (2.0.0+dfsg-2ubuntu1.3) @ trusty2026-05-27ubuntu
redhatqemu-kvm-rhev-10:1.5.3-60.el7_0.72014-09-22redhat
redhatqemu-kvm-rhev-2:0.12.1.2-2.415.el6_5.102014-07-24redhat
redhatqemu-kvm-10:1.5.3-60.el7_0.52014-07-23redhat
redhatqemu-kvm-2:0.12.1.2-2.415.el6_5.102014-06-10redhat
redhatrhev-hypervisor6-0:6.5-20140603.2.el6ev2014-06-09redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
qemu—2.1+dfsg-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
qemu—2.1+dfsg-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
qemu—2.1+dfsg-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
qemu—2.1+dfsg-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 4× in last 7d / 17× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 128 total refreshes for this CVE.

  1. 2026-09-15 03:04 UTCEPSS rescore
  2. 2026-09-13 16:41 UTCEPSS rescore
  3. 2026-09-12 14:55 UTCEPSS rescore
  4. 2026-09-11 09:30 UTCEPSS rescore
  5. 2026-09-07 19:21 UTCOSV refresh
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  14. 2026-08-21 04:44 UTCOSV refresh
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  25. 2026-08-05 20:21 UTCOSV refresh
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  1. 2026-08-05 19:12 UTCEPSS rescore
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  8. 2026-07-23 01:10 UTCEG score recompute
  9. 2026-07-23 00:14 UTCEG score recompute
  10. 2026-07-22 21:52 UTCEG score recompute
  11. 2026-07-22 14:04 UTCEPSS rescore
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  14. 2026-07-20 17:03 UTCEPSS rescore
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  17. 2026-07-19 14:27 UTCEPSS rescore
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  24. 2026-07-15 01:56 UTCEPSS rescore
  25. 2026-07-13 22:26 UTCEPSS rescore
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  27. 2026-07-12 05:42 UTCEPSS rescore
  28. 2026-07-09 19:05 UTCEPSS rescore
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  30. 2026-07-07 13:41 UTCEPSS rescore
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  36. 2026-07-02 10:17 UTCOSV refresh
  37. 2026-07-01 15:02 UTCEPSS rescore
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  65. 2026-06-14 09:13 UTCOSV refresh
  66. 2026-06-13 22:57 UTCEPSS rescore
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  75. 2026-06-05 22:44 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2013-4535?
CVE-2013-4535 is a high vulnerability published on February 11, 2020. The virtqueuemapsg function in hw/virtio/virtio.c in QEMU before 1.7.2 allows remote attackers to execute arbitrary files via a crafted savevm image, related to virtio-block or virtio-serial read.
When was CVE-2013-4535 disclosed?
CVE-2013-4535 was first published in the National Vulnerability Database on February 11, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-4535 actively exploited?
CVE-2013-4535 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 40.5% of all scored CVEs.
What is the CVSS score of CVE-2013-4535?
CVE-2013-4535 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2013-4535?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-4535, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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