How severe is CVE-2005-0560?

CVE-2005-0560 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2005-0560 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 69% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-0560?

CVE-2005-0560 primarily affects Microsoft Exchange Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-0560?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2005-0560 published?

CVE-2005-0560 was published on 2005-05-02 and last updated on 2026-06-16.

CVE-2005-0560

CVE-2005-0560 is a high-severity vulnerability in Microsoft Exchange Server with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 69% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 69% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Microsoft Exchange Server
Published: 2005-05-02
Last modified: 2026-06-16

Description

Heap-based buffer overflow in the SvrAppendReceivedChunk function in xlsasink.dll in the SMTP service of Exchange Server 2000 and 2003 allows remote attackers to execute arbitrary code via a crafted X-LINK2STATE extended verb request to the SMTP port.

Frequently asked questions

What is CVE-2005-0560?: Heap-based buffer overflow in the SvrAppendReceivedChunk function in xlsasink.dll in the SMTP service of Exchange Server 2000 and 2003 allows remote attackers to execute arbitrary code via a crafted X-LINK2STATE extended verb request to the SMTP port.
How severe is CVE-2005-0560?: CVE-2005-0560 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2005-0560 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 69% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-0560?: CVE-2005-0560 primarily affects Microsoft Exchange Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-0560?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2005-0560 published?: CVE-2005-0560 was published on 2005-05-02 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:microsoft:exchange_server:2000:-:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2003:-:*:*:*:*:*:*

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