CVE-2015-8077

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 attackers to have unspecified impact via vectors related to urlfetch range checks and the start_octet variable. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-8076.

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-2015-8077 is rated Moderate Risk (56.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.45%). 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-2015-8077

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 2025-03-30 7.31% 3.45% -3.86%
2 2025-03-29 3.45% 7.31% +3.86%
3 2025-03-19 — 3.45% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-8077

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-2015-8077

OS Trackers for CVE-2015-8077

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2015-8077
ubuntu medium CVE-2015-8077 medium priority: Ubuntu including 2 source packages (cyrus-imapd, cyrus-imapd-2.4), 50 status rows across 25 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, precise, questing, trusty, upstream, vivid, wily, xenial, yakkety, zesty): DNE 24, not-affected 19, ignored 4, released 2, needed 1. https://ubuntu.com/security/CVE-2015-8077

Affected software / configurations for CVE-2015-8077

Vendor Product Version Raw CPE
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:*:*:*:*:*:*:*
opensuse leap 42.1 cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
opensuse opensuse 13.2 cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

References for CVE-2015-8077

cvelogic Threat Intelligence