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CVE-2020-15704

17
FAUCET Score

CVE-2020-15704 is a local privilege escalation vulnerability affecting Canonical's ppp package and Ubuntu Linux. It stems from incorrect handling of module loading in the modprobe child process, allowing a local non-root attacker to read arbitrary root files by manipulating the MODPROBE_OPTIONS environment variable. Rated Medium (CVSS 5.5), this vulnerability requires local access and has a high impact on confidentiality. There is no evidence of active exploitation, public exploit code, or KEV listing, though it has received some community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.7-1\+ubuntu1.16.04.3CPE matchmatch criteria
cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*
< 2.4.7-2\+2ubuntu1.3CPE matchmatch criteria
cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*
< 2.4.7-2\+4.1ubuntu5.1CPE matchmatch criteria
cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*
< 2.4.5-5ubuntu1.4CPE matchmatch criteria
cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*
< 2.4.5-5.1ubuntu2.3\+esm2CPE matchmatch criteria
cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
29.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 85th percentile among its peer group of 15,938 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ubuntuvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2020-15704

ppp: Privilege escalation through loading of arbitrary kernel modules and other programs

Aug 5, 2020

References

ubuntu.com / security/notices/USN-4451-1
Vendor Advisory
ubuntu.com / security/notices/USN-4451-2
Vendor Advisory