7.8

CVE-2026-18297: gstreamer Stack-based Buffer Overflow

CVSS: 7.8v3.0HighAnalyzed
AliasesMGASA-2026-0418RHSA-2026:59097RHSA-2026:59487
Published 20-08-2026Last modified 27-08-2026
Open JSON

Vulnerability summary

CVE-2026-18297 is a high (CVSS 7.8) Stack-based Buffer Overflow vulnerability in gstreamer. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 13.8% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.0 (CVE.org)
EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2026:69100

Timeline

  1. 20-08-2026
    PublishedVulnerability first disclosed.
  2. 27-08-2026
    Last modifiedVulnerability information updated.

Description

GStreamer OGG File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of OGG files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29584.

CVSS metrics

5 scores · 5 sources · 2 versions

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

0.00 pp

From 0.24% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat7 products
  • gstreamer1-plugins-base< 0:1.26.7-2.el10_2.1 | < 0:1.16.1-6.el8_10.1 | < 0:1.16.1-4.el8_6.1 | < 0:1.22.12-5.el9_6.1 | < 0:1.18.4-8.el9_2.1 | < 0:1.22.1-4.el9_4.1 | < 0:1.16.1-4.el8_8.1 | < 0:1.24.11-1.el10_0.2 | < 0:1.16.1-4.el8_4.1 | < 0:1.10.4-4.el7_9.1
  • gstreamer1-plugins-base-debuginfo< 0:1.26.7-2.el10_2.1 | < 0:1.16.1-6.el8_10.1 | < 0:1.16.1-4.el8_6.1 | < 0:1.22.12-5.el9_6.1 | < 0:1.18.4-8.el9_2.1 | < 0:1.22.1-4.el9_4.1 | < 0:1.16.1-4.el8_8.1 | < 0:1.24.11-1.el10_0.2 | < 0:1.16.1-4.el8_4.1 | < 0:1.10.4-4.el7_9.1
  • gstreamer1-plugins-base-debugsource< 0:1.26.7-2.el10_2.1 | < 0:1.16.1-6.el8_10.1 | < 0:1.16.1-4.el8_6.1 | < 0:1.22.12-5.el9_6.1 | < 0:1.18.4-8.el9_2.1 | < 0:1.22.1-4.el9_4.1 | < 0:1.16.1-4.el8_8.1 | < 0:1.24.11-1.el10_0.2 | < 0:1.16.1-4.el8_4.1
  • gstreamer1-plugins-base-devel< 0:1.26.7-2.el10_2.1 | < 0:1.16.1-6.el8_10.1 | < 0:1.16.1-4.el8_6.1 | < 0:1.22.12-5.el9_6.1 | < 0:1.18.4-8.el9_2.1 | < 0:1.22.1-4.el9_4.1 | < 0:1.16.1-4.el8_8.1 | < 0:1.24.11-1.el10_0.2 | < 0:1.16.1-4.el8_4.1 | < 0:1.10.4-4.el7_9.1
  • gstreamer1-plugins-base-devel-docs< 0:1.10.4-4.el7_9.1
Mageia2 products
  • gstreamer1.0-plugins-base< 1.26.11-1.1.mga10
  • gstreamer1.0-plugins-base< 1.22.11-1.4.mga9
Debian1 product
  • gst-plugins-base1.0< 1.22.0-3+deb12u7 | < 1.26.2-1+deb13u2 | < 1.28.5-1
Gstreamer1 product
  • gstreamere3d33ecb5765f11c85b5ba739a0f1cf2bea81abe | < 1.28.5
Ubuntu1 product
  • gst-plugins-base1.0< 1.8.3-1ubuntu0.3+esm5 | < 1.14.5-0ubuntu1~18.04.3+esm4 | < 1.16.3-0ubuntu1.4+esm3 | < 1.20.1-1ubuntu0.7 | < 1.24.2-1ubuntu0.5 | < 1.28.2-1ubuntu0.1

5 vendors · 12 products

References

34 links
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