CVE-2003-0565 — Multiple vulnerabilities in multiple vendor implementations of the X.400 protocol allow remote attackers to cause a denial of service and possibly execute arbitrary code via an X.400 message containing certain unexpected ASN.1 constructs, as demonstrated using the NISSC test suite

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MEDIUM

Multiple vulnerabilities in multiple vendor implementations of the X.400 protocol allow remote attackers to cause a denial of service and possibly execute arbitrary code via an X.400 message containing certain unexpected ASN.1 constructs, as demonstrated using the NISSC test suite

Published Nov 6, 2003

5.0

MEDIUM

CVSS 2.0

EPSS 3.27%

Description

Multiple vulnerabilities in multiple vendor implementations of the X.400 protocol allow remote attackers to cause a denial of service and possibly execute arbitrary code via an X.400 message containing certain unexpected ASN.1 constructs, as demonstrated using the NISSC test suite.

Affected products

Remediation

No remediation recorded yet.

Metrics

3.27% 0.03271

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

EPSS probability 0.03271

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	3.27% (0.03271)	88.00th	v5 (v2026.06.15)
Jun 15, 2026	2.51% (0.02507)	82.63th	v5 (v2026.06.15)
Aug 23, 2025	4.88% (0.04879)	89.15th	v4 (v2025.03.14)
Mar 17, 2025	3.49% (0.03491)	86.80th	v4 (v2025.03.14)
Dec 12, 2024	0.40% (0.00400)	74.43th	v3 (v2023.03.01)
Feb 8, 2024	0.40% (0.00400)	72.90th	v3 (v2023.03.01)
Mar 7, 2023	0.40% (0.00400)	69.48th	v3 (v2023.03.01)
Mar 6, 2023	4.46% (0.04465)	88.31th	v2 (v2022.01.01)
Apr 1, 2022	4.46% (0.04465)	87.15th	v2 (v2022.01.01)
Feb 4, 2022	4.46% (0.04465)	70.95th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (2)

http://www.kb.cert.org/vuls/id/927278
third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
http://www.uniras.gov.uk/vuls/2003/006489/x400.htm
x_refsource_MISCVendor Advisory

Link	Providers	Tags
http://www.kb.cert.org/vuls/id/927278		third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
http://www.uniras.gov.uk/vuls/2003/006489/x400.htm		x_refsource_MISCVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Nov 6, 2003

Updated Aug 8, 2024

Reserved Jul 15, 2003

Link CVE-2003-0565

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2003-0565

Red Hat

Severity n/a

Public date n/a

Links CVE-2003-0565