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CVE-2018-11434

20
FAUCET Score

CVE-2018-11434 is a heap-based buffer over-read vulnerability in the buffer_fill64 function of Libmobi 0.3, allowing remote attackers to cause information disclosure via a specially crafted mobi file. With a CVSS score of 6.5 (Medium), it can be exploited over the network with low attack complexity, requiring user interaction, and primarily impacts confidentiality. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion, suggesting a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
0.3CPE matchmatch criteria
cpe:2.3:a:libmobi_project:libmobi:0.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 83rd percentile among its peer group of 26,234 CVEs.

Social Chatter

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

Remediation

Remediation records are not available for this CVE.

References

seclists.org / fulldisclosure/2018/May/48
ExploitMailing ListThird Party Advisory