CVE-2015-2233 — Lenovo System Update (formerly ThinkVantage System Update) before 5.06.0034 does not properly validate CA chains during signature validation, which allows man-in-the-middle attackers to upload and execute arbitrary files via a crafted certificate

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HIGH

Lenovo System Update (formerly ThinkVantage System Update) before 5.06.0034 does not properly validate CA chains during signature validation, which allows man-in-the-middle attackers to upload and execute arbitrary files via a crafted certificate

Published May 12, 2015

8.3

HIGH

CVSS 2.0

EPSS 0.40%

Description

Lenovo System Update (formerly ThinkVantage System Update) before 5.06.0034 does not properly validate CA chains during signature validation, which allows man-in-the-middle attackers to upload and execute arbitrary files via a crafted certificate.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.40% 0.00404

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00404

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.40% (0.00404)	32.20th	v5 (v2026.06.15)
Jun 15, 2026	0.40% (0.00404)	31.91th	v5 (v2026.06.15)
Mar 17, 2025	0.08% (0.00080)	21.23th	v4 (v2025.03.14)
Dec 12, 2024	0.05% (0.00049)	20.82th	v3 (v2023.03.01)
May 22, 2024	0.05% (0.00049)	18.44th	v3 (v2023.03.01)
Mar 7, 2023	0.05% (0.00049)	16.33th	v3 (v2023.03.01)
Mar 6, 2023	1.02% (0.01018)	40.69th	v2 (v2022.01.01)
Sep 10, 2022	1.02% (0.01018)	38.88th	v2 (v2022.01.01)
Apr 1, 2022	1.02% (0.01018)	36.86th	v2 (v2022.01.01)
Feb 4, 2022	1.02% (0.01018)	19.50th	v2 (v2022.01.01)

Weaknesses (1)

CWE-310

References (4)

http://securitytracker.com/id/1032268
vdb-entryx_refsource_SECTRACK
http://support.lenovo.com/us/en/product_security/lsu_privilege
x_refsource_CONFIRMVendor Advisory
http://www.ioactive.com/pdfs/Lenovo_System_Update_Multiple_Privilege_Escalations.pdf
x_refsource_MISC
http://www.securityfocus.com/bid/74642
vdb-entryx_refsource_BID

Link	Providers	Tags
http://securitytracker.com/id/1032268		vdb-entryx_refsource_SECTRACK
http://support.lenovo.com/us/en/product_security/lsu_privilege		x_refsource_CONFIRMVendor Advisory
http://www.ioactive.com/pdfs/Lenovo_System_Update_Multiple_Privilege_Escalations.pdf		x_refsource_MISC
http://www.securityfocus.com/bid/74642		vdb-entryx_refsource_BID

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published May 12, 2015

Updated Aug 6, 2024

Reserved Mar 6, 2015

Link CVE-2015-2233

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-2233

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-2233