CVE-2015-8076

CVE-2015-8076 is a high-severity vulnerability in Cyrus Imap with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 3% (87th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Cyrus Imap
• Published: 2015-12-03
• Last modified: 2026-06-17

Description

The index_urlfetch function in index.c in Cyrus IMAP 2.3.x before 2.3.19, 2.4.x before 2.4.18, 2.5.x before 2.5.4 allows remote attackers to obtain sensitive information or possibly have unspecified other impact via vectors related to the urlfetch range, which triggers an out-of-bounds heap read.

Frequently asked questions

What is CVE-2015-8076?

The index_urlfetch function in index.c in Cyrus IMAP 2.3.x before 2.3.19, 2.4.x before 2.4.18, 2.5.x before 2.5.4 allows remote attackers to obtain sensitive information or possibly have unspecified other impact via vectors related to the urlfetch range, which triggers an out-of-bounds heap read.

How severe is CVE-2015-8076?

CVE-2015-8076 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2015-8076 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-2015-8076?

CVE-2015-8076 primarily affects Cyrus Imap. In total, 43 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-8076?

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-2015-8076 published?

CVE-2015-8076 was published on 2015-12-03 and last updated on 2026-06-17.

References

• http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00066.html
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00000.html
• http://lists.opensuse.org/opensuse-updates/2015-09/msg00037.html
• http://lists.opensuse.org/opensuse-updates/2015-09/msg00038.html
• http://www.openwall.com/lists/oss-security/2015/09/29/2
• http://www.openwall.com/lists/oss-security/2015/09/30/3
• http://www.openwall.com/lists/oss-security/2015/11/04/3
• https://cyrus.foundation/cyrus-imapd/commit/?id=07de4ff1bf2fa340b9d77b8e7de8d43d47a33921
• https://cyrus.foundation/cyrus-imapd/commit/?id=c21e179c1f6b968fe69bebe079176714e511587b
• https://docs.cyrus.foundation/imap/release-notes/2.3/x/2.3.19.html
• https://docs.cyrus.foundation/imap/release-notes/2.4/x/2.4.18.html
• https://docs.cyrus.foundation/imap/release-notes/2.5/x/2.5.4.html

Affected products (43)

• cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.4:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.5:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.6:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.7:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.8:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.9:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.10:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.11:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.12:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.13:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.14:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.15:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.16:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.17:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.3.18:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.4:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.5:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.6:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.7:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.8:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.9:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.10:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.11:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.12:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.13:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.14:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.15:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.16:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.4.17:*:*:*:*:*:*:*
• cpe:2.3:a:cyrus:imap:2.5.0:*:*:*:*:*:*:*

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• CVE-2021-33582 — High (CVSS 7.5): Cyrus IMAP before 3.4.2 allows remote attackers to cause a denial of service (multiple-minute daemon hang) via input…
• CVE-2015-8078 — High (CVSS 7.5): Integer overflow in the index_urlfetch function in imap/index.c in Cyrus IMAP 2.3.19, 2.4.18, and 2.5.6 allows remote…
• CVE-2015-8077 — High (CVSS 7.5): Integer overflow in the index_urlfetch function in imap/index.c in Cyrus IMAP 2.3.19, 2.4.18, and 2.5.6 allows remote…

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