CVE-2018-20763: In GPAC 0.7.1 and earlier, gf_text_get_utf8_line in media_tools/text_import.c in libgpac_static.a allows an ou

Q: How do I fix CVE-2018-20763?

gpac: upgrade to newer than 0.7.1; debian linux: mitigate or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2018-20763 being exploited?

CVE-2018-20763 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-20763 affect?

CVE-2018-20763 affects gpac, debian linux, ubuntu linux. Severity is high (CVSS 7.8). In GPAC 0.7.1 and earlier, gf_text_get_utf8_line in media_tools/text_import.c in libgpac_static.a allows an out-of-bounds write because of missing szLineConv bounds checking.

Q: How urgent is CVE-2018-20763?

Priority 55/100. High severity; Public exploit reference; On your watchlist

This month

HIGH 7.8WATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2018-20763 is a high-severity flaw (CVSS 7.8) affecting gpac, debian linux, ubuntu linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In GPAC 0.7.1 and earlier, gf_text_get_utf8_line in media_tools/text_import.c in libgpac_static.a allows an out-of-bounds write because of missing szLineConv bounds checking.

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-787
Published	2019-02-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: canonical · debian · gpac project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-02-06 23:29 UTCPublished CVE record published
2026-06-17 01:53 UTCUpdated Record last modified

gpac project gpac UPGRADE

Affected: <= 0.7.1

Fixed in: newer than 0.7.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gpac || rpm -q gpac || gpac --version

2. UPGRADE to newer than 0.7.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gpac

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gpac

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

debian debian linux MITIGATE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canonical ubuntu linux MITIGATE

Affected: 16.04 · 18.04 · 18.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-20763?

gpac: upgrade to newer than 0.7.1; debian linux: mitigate or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-20763 being exploited?

CVE-2018-20763 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-20763 affect?

CVE-2018-20763 affects gpac, debian linux, ubuntu linux. Severity is high (CVSS 7.8). In GPAC 0.7.1 and earlier, gf_text_get_utf8_line in media_tools/text_import.c in libgpac_static.a allows an out-of-bounds write because of missing szLineConv bounds checking.

How urgent is CVE-2018-20763?

Priority 55/100. High severity; Public exploit reference; On your watchlist

Software pages

Ubuntu vulnerabilities · Debian vulnerabilities

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References

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