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CVE-2018-20763

25
FAUCET Score

CVE-2018-20763 is an out-of-bounds write vulnerability in GPAC versions 0.7.1 and earlier, specifically within the gf_text_get_utf8_line function of libgpac_static.a, due to missing bounds checking. This flaw affects various distributions of GPAC on Canonical and Debian Linux. With a CVSS score of 7.8 (HIGH), it presents a significant risk, allowing for high confidentiality, integrity, and availability impacts through local access and user interaction. Despite its severity, there is no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.7.1CPE matchmatch criteria
cpe:2.3:a:gpac_project:gpac:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
18.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.41%
Probability of exploitation in next 30 days
EPSS Percentile
69.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0141 is in the 68th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / gpac/gpac/commit/1c449a34fe0b50aaffb881bfb9d7c5ab0bb18cdd
PatchThird Party Advisory
github.com / gpac/gpac/issues/1188
ExploitThird Party Advisory
lists.debian.org / debian-lts-announce/2019/02/msg00040.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3926-1
Third Party Advisory