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CVE-2026-5673

A flaw was found in libtheora. This heap-based out-of-bounds read vulnerability exists within the AVI (Audio Video Interleave) parser, specifically in the avi_parse_input_file() function. A local attacker could exploit this by tricking a user into opening a specially crafted AVI file containing a truncated header sub-chunk. This could lead to a denial-of-service (application crash) or potentially leak sensitive information from the heap.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:abca66cb5573a3de1678e1c7d347bbea8a60d02b436418d046ac6a1fc453e14b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 5 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"affected","packageName":"libtheora","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"libtheora","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/affected/4

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"libtheora","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"affected","packageName":"libtheora","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"affected","packageName":"libtheora","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/affected/0

Affected products and versions

5 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"affected","packageName":"libtheora","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"libtheora","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"libtheora","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"affected","packageName":"libtheora","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"affected","packageName":"libtheora","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.6,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-125","description":"Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-5673"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/references/0
{"name":"RHBZ#2455340","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2455340"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/references/1
{"url":"https://github.com/xiph/theora/issues/24"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63a972a2c332c975c076012d08b2d3bdcf2063327ae68a1f8e9787ffbdfdfd20 · sha256:7a998f300f9e9b3f… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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