VulnerabilityPublished 30 Oct 2026

CVE-2026-119842: Red Hat Enterprise Linux 10 gstreamer1-plugins-base · NULL Pointer Dereference

Affects Red Hat Enterprise Linux 10 gstreamer1-plugins-baseSource CVE Database V5

Not known to be exploited · CVSS 6.5 Medium : upgrade the Red Hat redhat/gstreamer1-plugins-base package to 1.28.2 when convenient.

Data as of 30 Oct 2026, 20:38 UTC

CVSS 3.1 base score

6.5Medium

How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none

CVSS scores by source
CNA (redhat)	CVSS 3.1	6.5

Patch: Available – fixed in 1.28.2

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 30 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade the Red Hat redhat/gstreamer1-plugins-base package to 1.28.2.

Affected software

Product	Affected	Fixed in
Red Hatredhat/gstreamer1-plugins-base`pkg:rpm/redhat/gstreamer1-plugins-base`Other threats	Affected <1.28.2	Fixed in 1.28.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available upstream in gst-plugins-base version 1.28.2 and later. Fedora 44 and Fedora Rawhide include the fixed version 1.28.8 and are not affected. Red Hat Enterprise Linux users should upgrade to a version including the fix when available. In the meantime, users should avoid opening untrusted MicroDVD (.sub) subtitle files and disable automatic subtitle loading if the media player supports this feature.

Description

CVE-2026-119842 is a moderate severity vulnerability in the GStreamer gst-plugins-base MicroDVD subtitle parser used in Red Hat Enterprise Linux 10. The flaw causes a NULL pointer dereference when processing a specially crafted MicroDVD (.sub) subtitle file, leading to a crash of the media player application. Exploitation requires user interaction by opening or playing media with a malformed subtitle file. The impact is limited to denial of service with no confidentiality or integrity loss. Versions of gstreamer1-plugins-base prior to 1.28.2 are affected; Fedora 43 is affected, while Fedora 44 and later include the fix. Mitigation includes avoiding untrusted subtitle files and disabling automatic subtitle loading if possible.

Impact

The vulnerability causes a denial of service by crashing the media player application when processing a malformed MicroDVD subtitle file. There is no impact on confidentiality or integrity. Exploitation requires user interaction, limiting the risk to users who open or play media files with maliciously crafted subtitles.

Summary

This vulnerability exists in the MicroDVD subtitle parser component of GStreamer's gst-plugins-base package. When a user opens or plays media containing a maliciously crafted MicroDVD subtitle file, the parser may dereference a NULL pointer due to missing closing-brace checks, causing the media player process to crash. Red Hat Enterprise Linux 10 and Fedora 43 ship affected versions of gstreamer1-plugins-base built from upstream versions prior to 1.28.2. The issue is fixed upstream in gst-plugins-base 1.28.2 and later. The vulnerability requires user interaction and results in denial of service only, with no impact on confidentiality or integrity.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 30 Oct 2026, 19:04 UTC

Technical details

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