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CVE-2015-8077

20
FAUCET Score

CVE-2015-8077 is an integer overflow vulnerability in the index_urlfetch function of Cyrus IMAP versions 2.3.19, 2.4.18, and 2.5.6, affecting Cyrus IMAP and various openSUSE distributions. This flaw, an incomplete fix for CVE-2015-8076, allows remote attackers to achieve unspecified impact through manipulated urlfetch range checks. With a CVSS score of 7.5, it is considered highly severe, requiring no authentication and having low attack complexity, potentially leading to partial confidentiality, integrity, and availability compromise. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.3.0CPE matchmatch criteria
cpe:2.3:a:cyrus:imap:2.3.0:*:*:*:*:*:*:*
2.3.1CPE matchmatch criteria
cpe:2.3:a:cyrus:imap:2.3.1:*:*:*:*:*:*:*
2.3.2CPE matchmatch criteria
cpe:2.3:a:cyrus:imap:2.3.2:*:*:*:*:*:*:*
2.3.3CPE matchmatch criteria
cpe:2.3:a:cyrus:imap:2.3.3:*:*:*:*:*:*:*
2.3.4CPE matchmatch criteria
cpe:2.3:a:cyrus:imap:2.3.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.26%
Probability of exploitation in next 30 days
EPSS Percentile
87.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0326 is in the 77th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2015-8077Moderate

cyrus-imapd: Integer overflow in range checks

Oct 26, 2015

References

lists.opensuse.org / opensuse-security-announce/2016-05/msg00066.html
lists.opensuse.org / opensuse-security-announce/2016-06/msg00000.html
lists.opensuse.org / opensuse-updates/2015-11/msg00156.html
lists.opensuse.org / opensuse-updates/2015-12/msg00015.html
cyrus.foundation / cyrus-imapd/commit
docs.cyrus.foundation / imap/release-notes/2.5/x/2.5.7.html
Vendor Advisory
lists.andrew.cmu.edu / pipermail/cyrus-devel/2015-October/003534.html
openwall.com / lists/oss-security/2015/09/30/3
openwall.com / lists/oss-security/2015/11/04/3
securitytracker.com / id/1034282