CVE-2003-0300
CVE-2003-0300 is a medium-severity vulnerability in Microsoft Outlook Express with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 2.0 base score 5.0)
- EPSS exploit prediction: 3% (87th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft Outlook Express
- Published:
- Last modified:
Description
The IMAP Client for Sylpheed 0.8.11 allows remote malicious IMAP servers to cause a denial of service (crash) via certain large literal size values that cause either integer signedness errors or integer overflow errors.
Frequently asked questions
- What is CVE-2003-0300?
- The IMAP Client for Sylpheed 0.8.11 allows remote malicious IMAP servers to cause a denial of service (crash) via certain large literal size values that cause either integer signedness errors or integer overflow errors.
- How severe is CVE-2003-0300?
- CVE-2003-0300 has a CVSS 2.0 base score of 5.0, rated medium severity.
- Is CVE-2003-0300 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2003-0300?
- CVE-2003-0300 primarily affects Microsoft Outlook Express. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2003-0300?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2003-0300 published?
- CVE-2003-0300 was published on 2003-06-16 and last updated on 2026-06-16.
References
Affected products (9)
- cpe:2.3:a:microsoft:outlook_express:6.00.2800.1106:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:mozilla:1.3:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:mozilla:1.4:alpha:*:*:*:*:*:*
- cpe:2.3:a:mutt:mutt:1.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:qualcomm:eudora:5.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:stuart_parmenter:balsa:2.0.10:*:*:*:*:*:*:*
- cpe:2.3:a:sylpheed:sylpheed_email_client:0.8.11:*:*:*:*:*:*:*
- cpe:2.3:a:university_of_washington:pine:4.53:*:*:*:*:*:*:*
- cpe:2.3:a:ximian:evolution:1.2.4:*:*:*:*:*:*:*
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