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.

Published: 2015-12-03 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-8076 is rated Moderate Risk (59.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.63%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-8076

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-07-13 2.66% 2.63% -0.03%
2 2025-06-29 2.63% 2.66% +0.03%
3 2025-03-30 — 2.63% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-8076

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2015-8076

OS Trackers for CVE-2015-8076

vendor priority summary link
redhat low — https://access.redhat.com/security/cve/CVE-2015-8076
ubuntu medium CVE-2015-8076 medium priority: Ubuntu including 1 source packages (cyrus-imapd-2.4), 12 status rows across 12 suites (artful, bionic, cosmic, disco, precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): DNE 7, ignored 3, not-affected 1, released 1. https://ubuntu.com/security/CVE-2015-8076

Affected software / configurations for CVE-2015-8076

Vendor Product Version Raw CPE
opensuse leap 42.1 cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
opensuse opensuse 13.2 cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
cyrus imap 2.3.0 cpe:2.3:a:cyrus:imap:2.3.0:*:*:*:*:*:*:*
cyrus imap 2.3.1 cpe:2.3:a:cyrus:imap:2.3.1:*:*:*:*:*:*:*
cyrus imap 2.3.2 cpe:2.3:a:cyrus:imap:2.3.2:*:*:*:*:*:*:*
cyrus imap 2.3.3 cpe:2.3:a:cyrus:imap:2.3.3:*:*:*:*:*:*:*
cyrus imap 2.3.4 cpe:2.3:a:cyrus:imap:2.3.4:*:*:*:*:*:*:*
cyrus imap 2.3.5 cpe:2.3:a:cyrus:imap:2.3.5:*:*:*:*:*:*:*
cyrus imap 2.3.6 cpe:2.3:a:cyrus:imap:2.3.6:*:*:*:*:*:*:*
cyrus imap 2.3.7 cpe:2.3:a:cyrus:imap:2.3.7:*:*:*:*:*:*:*
cyrus imap 2.3.8 cpe:2.3:a:cyrus:imap:2.3.8:*:*:*:*:*:*:*
cyrus imap 2.3.9 cpe:2.3:a:cyrus:imap:2.3.9:*:*:*:*:*:*:*
cyrus imap 2.3.10 cpe:2.3:a:cyrus:imap:2.3.10:*:*:*:*:*:*:*
cyrus imap 2.3.11 cpe:2.3:a:cyrus:imap:2.3.11:*:*:*:*:*:*:*
cyrus imap 2.3.12 cpe:2.3:a:cyrus:imap:2.3.12:*:*:*:*:*:*:*
cyrus imap 2.3.13 cpe:2.3:a:cyrus:imap:2.3.13:*:*:*:*:*:*:*
cyrus imap 2.3.14 cpe:2.3:a:cyrus:imap:2.3.14:*:*:*:*:*:*:*
cyrus imap 2.3.15 cpe:2.3:a:cyrus:imap:2.3.15:*:*:*:*:*:*:*
cyrus imap 2.3.16 cpe:2.3:a:cyrus:imap:2.3.16:*:*:*:*:*:*:*
cyrus imap 2.3.17 cpe:2.3:a:cyrus:imap:2.3.17:*:*:*:*:*:*:*
cyrus imap 2.3.18 cpe:2.3:a:cyrus:imap:2.3.18:*:*:*:*:*:*:*
cyrus imap 2.4.0 cpe:2.3:a:cyrus:imap:2.4.0:*:*:*:*:*:*:*
cyrus imap 2.4.1 cpe:2.3:a:cyrus:imap:2.4.1:*:*:*:*:*:*:*
cyrus imap 2.4.2 cpe:2.3:a:cyrus:imap:2.4.2:*:*:*:*:*:*:*
cyrus imap 2.4.3 cpe:2.3:a:cyrus:imap:2.4.3:*:*:*:*:*:*:*
cyrus imap 2.4.4 cpe:2.3:a:cyrus:imap:2.4.4:*:*:*:*:*:*:*
cyrus imap 2.4.5 cpe:2.3:a:cyrus:imap:2.4.5:*:*:*:*:*:*:*
cyrus imap 2.4.6 cpe:2.3:a:cyrus:imap:2.4.6:*:*:*:*:*:*:*
cyrus imap 2.4.7 cpe:2.3:a:cyrus:imap:2.4.7:*:*:*:*:*:*:*
cyrus imap 2.4.8 cpe:2.3:a:cyrus:imap:2.4.8:*:*:*:*:*:*:*
cyrus imap 2.4.9 cpe:2.3:a:cyrus:imap:2.4.9:*:*:*:*:*:*:*
cyrus imap 2.4.10 cpe:2.3:a:cyrus:imap:2.4.10:*:*:*:*:*:*:*
cyrus imap 2.4.11 cpe:2.3:a:cyrus:imap:2.4.11:*:*:*:*:*:*:*
cyrus imap 2.4.12 cpe:2.3:a:cyrus:imap:2.4.12:*:*:*:*:*:*:*
cyrus imap 2.4.13 cpe:2.3:a:cyrus:imap:2.4.13:*:*:*:*:*:*:*
cyrus imap 2.4.14 cpe:2.3:a:cyrus:imap:2.4.14:*:*:*:*:*:*:*
cyrus imap 2.4.15 cpe:2.3:a:cyrus:imap:2.4.15:*:*:*:*:*:*:*
cyrus imap 2.4.16 cpe:2.3:a:cyrus:imap:2.4.16:*:*:*:*:*:*:*
cyrus imap 2.4.17 cpe:2.3:a:cyrus:imap:2.4.17:*:*:*:*:*:*:*
cyrus imap 2.5.0 cpe:2.3:a:cyrus:imap:2.5.0:*:*:*:*:*:*:*
cyrus imap 2.5.1 cpe:2.3:a:cyrus:imap:2.5.1:*:*:*:*:*:*:*
cyrus imap 2.5.2 cpe:2.3:a:cyrus:imap:2.5.2:*:*:*:*:*:*:*
cyrus imap 2.5.3 cpe:2.3:a:cyrus:imap:2.5.3:*:*:*:*:*:*:*

References for CVE-2015-8076

URL Tags
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 Vendor Advisory
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 Vendor Advisory
https://docs.cyrus.foundation/imap/release-notes/2.5/x/2.5.4.html Vendor Advisory
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