# CVE-2023-5217: Google Chromium libvpx Heap Buffer Overflow Vulnerability

> CVE-2023-5217: Google Chromium libvpx Heap Buffer Overflow Vulnerability. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2023-5217
Last updated: 2025-10-21T23:05:36Z

- Published: 2023-09-28 15:23 UTC · Updated: 2025-10-21 23:05 UTC · Assigner: Chrome
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 49.0%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-10-02, federal due date 2023-10-23, ransomware use: Unknown

## Description

Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

## CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

## Affected vendors and products

- Google: Chrome
- Google: libvpx

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-5217)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2023-5217)
- [https://arstechnica.com/security/2023/09/new-0-day-in-chrome-and-firefox-is-likely-to-plague-other-software/](https://arstechnica.com/security/2023/09/new-0-day-in-chrome-and-firefox-is-likely-to-plague-other-software/)
- [https://bugzilla.redhat.com/show\_bug.cgi?id=2241191](https://bugzilla.redhat.com/show_bug.cgi?id=2241191)
- [https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop\_27.html](https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_27.html)
- [https://crbug.com/1486441](https://crbug.com/1486441)
- [https://github.com/webmproject/libvpx/commit/3fbd1dca6a4d2dad332a2110d646e4ffef36d590](https://github.com/webmproject/libvpx/commit/3fbd1dca6a4d2dad332a2110d646e4ffef36d590)
- [https://github.com/webmproject/libvpx/commit/af6dedd715f4307669366944cca6e0417b290282](https://github.com/webmproject/libvpx/commit/af6dedd715f4307669366944cca6e0417b290282)
- [https://github.com/webmproject/libvpx/releases/tag/v1.13.1](https://github.com/webmproject/libvpx/releases/tag/v1.13.1)
- [https://github.com/webmproject/libvpx/tags](https://github.com/webmproject/libvpx/tags)
- [https://lists.debian.org/debian-lts-announce/2023/09/msg00038.html](https://lists.debian.org/debian-lts-announce/2023/09/msg00038.html)
- [https://lists.debian.org/debian-lts-announce/2023/10/msg00001.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00001.html)
- [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4MFWDFJSSIFKWKNOCTQCFUNZWAXUCSS4/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4MFWDFJSSIFKWKNOCTQCFUNZWAXUCSS4/)
- [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/55YVCZNAVY3Y5E4DWPWMX2SPKZ2E5SOV/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/55YVCZNAVY3Y5E4DWPWMX2SPKZ2E5SOV/)
- [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BCVSHVX2RFBU3RMCUFSATVQEJUFD4Q63/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BCVSHVX2RFBU3RMCUFSATVQEJUFD4Q63/)
- [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WTRUIS3564P7ZLM2S2IH4Y4KZ327LI4I/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WTRUIS3564P7ZLM2S2IH4Y4KZ327LI4I/)
- [https://pastebin.com/TdkC4pDv](https://pastebin.com/TdkC4pDv)
- [https://security-tracker.debian.org/tracker/CVE-2023-5217](https://security-tracker.debian.org/tracker/CVE-2023-5217)
- [https://stackdiary.com/google-discloses-a-webm-vp8-bug-tracked-as-cve-2023-5217/](https://stackdiary.com/google-discloses-a-webm-vp8-bug-tracked-as-cve-2023-5217/)
- [https://twitter.com/maddiestone/status/1707163313711497266](https://twitter.com/maddiestone/status/1707163313711497266)
- [https://www.debian.org/security/2023/dsa-5508](https://www.debian.org/security/2023/dsa-5508)
- [https://www.debian.org/security/2023/dsa-5509](https://www.debian.org/security/2023/dsa-5509)
- [https://www.debian.org/security/2023/dsa-5510](https://www.debian.org/security/2023/dsa-5510)
- [https://www.mozilla.org/en-US/security/advisories/mfsa2023-44/](https://www.mozilla.org/en-US/security/advisories/mfsa2023-44/)
- [https://www.openwall.com/lists/oss-security/2023/09/28/5](https://www.openwall.com/lists/oss-security/2023/09/28/5)
- [http://www.openwall.com/lists/oss-security/2023/09/28/5](http://www.openwall.com/lists/oss-security/2023/09/28/5)
- [http://www.openwall.com/lists/oss-security/2023/09/28/6](http://www.openwall.com/lists/oss-security/2023/09/28/6)
- [http://www.openwall.com/lists/oss-security/2023/09/29/1](http://www.openwall.com/lists/oss-security/2023/09/29/1)
- [http://www.openwall.com/lists/oss-security/2023/09/29/11](http://www.openwall.com/lists/oss-security/2023/09/29/11)
- [http://www.openwall.com/lists/oss-security/2023/09/29/12](http://www.openwall.com/lists/oss-security/2023/09/29/12)
- [http://www.openwall.com/lists/oss-security/2023/09/29/14](http://www.openwall.com/lists/oss-security/2023/09/29/14)
- [http://www.openwall.com/lists/oss-security/2023/09/29/2](http://www.openwall.com/lists/oss-security/2023/09/29/2)
- [http://www.openwall.com/lists/oss-security/2023/09/29/7](http://www.openwall.com/lists/oss-security/2023/09/29/7)
- [http://www.openwall.com/lists/oss-security/2023/09/29/9](http://www.openwall.com/lists/oss-security/2023/09/29/9)
- [http://www.openwall.com/lists/oss-security/2023/09/30/1](http://www.openwall.com/lists/oss-security/2023/09/30/1)
- [http://www.openwall.com/lists/oss-security/2023/09/30/2](http://www.openwall.com/lists/oss-security/2023/09/30/2)
- [http://www.openwall.com/lists/oss-security/2023/09/30/3](http://www.openwall.com/lists/oss-security/2023/09/30/3)
- [http://www.openwall.com/lists/oss-security/2023/09/30/4](http://www.openwall.com/lists/oss-security/2023/09/30/4)
- [http://www.openwall.com/lists/oss-security/2023/09/30/5](http://www.openwall.com/lists/oss-security/2023/09/30/5)
- [http://www.openwall.com/lists/oss-security/2023/10/01/1](http://www.openwall.com/lists/oss-security/2023/10/01/1)
- [http://www.openwall.com/lists/oss-security/2023/10/01/2](http://www.openwall.com/lists/oss-security/2023/10/01/2)
- [http://www.openwall.com/lists/oss-security/2023/10/01/5](http://www.openwall.com/lists/oss-security/2023/10/01/5)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2023-5217 · Markdown: https://rewindex.com/cve/CVE-2023-5217.md · JSON: https://rewindex.com/api/v1/cves/CVE-2023-5217 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:09:54.541Z