CVE-2001-1088
CVE-2001-1088 is a high-severity vulnerability in Microsoft Outlook with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: High (CVSS 2.0 base score 7.5)
- EPSS exploit prediction: 20% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft Outlook
- Published:
- Last modified:
Description
Microsoft Outlook 8.5 and earlier, and Outlook Express 5 and earlier, with the "Automatically put people I reply to in my address book" option enabled, do not notify the user when the "Reply-To" address is different than the "From" address, which could allow an untrusted remote attacker to spoof legitimate addresses and intercept email from the client that is intended for another user.
Frequently asked questions
- What is CVE-2001-1088?
- Microsoft Outlook 8.5 and earlier, and Outlook Express 5 and earlier, with the "Automatically put people I reply to in my address book" option enabled, do not notify the user when the "Reply-To" address is different than the "From" address, which could allow an untrusted remote attacker to spoof legitimate addresses and intercept email from the client that is intended for another user.
- How severe is CVE-2001-1088?
- CVE-2001-1088 has a CVSS 2.0 base score of 7.5, rated high severity.
- Is CVE-2001-1088 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2001-1088?
- CVE-2001-1088 primarily affects Microsoft Outlook. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2001-1088?
- 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-2001-1088 published?
- CVE-2001-1088 was published on 2001-06-05 and last updated on 2026-06-16.
References
- http://support.microsoft.com/default.aspx?scid=kb%3BEN-US%3Bq234241
- http://www.securityfocus.com/archive/1/188752
- http://www.securityfocus.com/bid/2823
- https://exchange.xforce.ibmcloud.com/vulnerabilities/6655
Affected products (11)
- cpe:2.3:a:microsoft:outlook:97:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook:98:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook:2000:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:4.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:4.5:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:4.27.3110:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:4.72.2106:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:4.72.3120.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:4.72.3612:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:5.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:5.5:*:*:*:*:*:*:*
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