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CVE-2017-9773

20
FAUCET Score

CVE-2017-9773 describes a Denial of Service vulnerability in Horde_Image versions prior to 2.5.0, specifically impacting the "Null" image driver. This medium-severity vulnerability (CVSS 5.7) can be triggered by an authenticated attacker sending a crafted URL, leading to a high impact on availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, organizations using affected Horde_Image versions should update to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.0CPE matchmatch criteria
cpe:2.3:a:horde:horde_image:2.0.0:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:horde:horde_image:2.0.0:alpha1:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:horde:horde_image:2.0.0:beta1:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:horde:horde_image:2.0.0:beta2:*:*:*:*:*:*
2.0.1CPE matchmatch criteria
cpe:2.3:a:horde:horde_image:2.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.7MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 89th percentile among its peer group of 15,224 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

lists.horde.org / archives/announce/2017/001234.html
Mailing ListThird Party Advisory
debian.org / security/2018/dsa-4276