CVE-2023-5217
HighExploitedPublic exploitHeap 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.
Published Nov 29, 2023 · Updated Sep 10, 2026 · Also known as DEBIAN-CVE-2023-5217, DLA-3591-1, DSA-5509-1, DSA-5510-1, GHSA-qqvq-6xgj-jw8g, JLSEC-2026-375, MFSA 2023-44, SUSE-SU-2023:3940-1, SUSE-SU-2023:3941-1, SUSE-SU-2023:3946-1, SUSE-SU-2023:3948-1, SUSE-SU-2023:3949-1, SUSE-SU-2023:3950-1, UBUNTU-CVE-2023-5217
Key Facts
Patch immediately- CVE-2023-5217 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Chrome (Google), Edge (Microsoft), Edge Chromium (Microsoft) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 25, 2023. Public exploit code is available.
- EPSS estimates a 49% probability of exploitation in the next 30 days.
- Fixed versions are available, including Ipados 17.0.3, Iphone OS 17.0.3, Chrome 117.0.5938.132.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
49%
Higher than 98.8% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-5217 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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)
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Oct 2, 2023 | Oct 23, 2023 | Not reported |
| Industry KEV feed | Sep 25, 2023 | Oct 23, 2023 | Not reported |
| CIRCL KEV | Oct 2, 2023 | Oct 23, 2023 | Not reported |
| ENISA EUVD | Oct 2, 2023 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected Products
436 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ChromeGoogle | >= 117.0.5938.132 | 117.0.5938.132 |
| EdgeMicrosoft | 116.0.1938.98, 117.0.2045.47 | n/a |
| Edge ChromiumMicrosoft | 116.0.5845.229, 117.0.5938.132 | n/a |
| FirefoxMozilla | See advisory | 118.0.1 |
| ThunderbirdMozilla | See advisory | 115.3.1 |
Patched Releases
Ipados
17.0.3
Iphone OS
17.0.3
Chrome
117.0.5938.132
chromedriver
117.0.5938.132-1.1, 117.0.5938.132-bp155.2.40.1
chromium
116.0.5845.96-1.ph4, 117.0.5938.132-1, 117.0.5938.132-1.1, 117.0.5938.132-1~deb11u1, 117.0.5938.132-1~deb12u1, 117.0.5938.132-bp155.2.40.1, 119.0.6045.176-1.ph5
electron
22.3.25, 24.8.5, 25.8.4, 26.2.4, 27.0.0-beta.8
element-desktop
1.11.47-1.1
Firefox
0:115.3.1-1.el7_9, 0:115.3.1-1.el8_8, 0:115.3.1-1.el9_2, 115.3.1-1.0.1.el7_9, 115.3.1-1.0.1.el8_8, 115.3.1-1.0.1.el9_2, 115.3.1-1.el9_2.alma.1, 118.0.1+build1-0ubuntu0.20.04.1, 115.3.1, 118.0.1, 118.1
firefox-esr
115.3.1-r0, 115.3.1esr-1~deb10u1, 115.3.1esr-1~deb11u1, 118.0.1-r0, 128.5.1-1.1, 140.8.0esr-1~deb13u1
firefox-esr-branding-upstream
128.5.1-1.1
firefox-esr-translations-common
128.5.1-1.1
firefox-esr-translations-other
128.5.1-1.1
firefox-x11
115.3.1-1.0.1.el9_2
libmozjs-115-0
115.3.1-1.1
libqt5-qtpdf-devel
5.15.16-1.1
libqt5-qtpdf-examples
5.15.16-1.1
libqt5-qtpdf-imports
5.15.16-1.1
libqt5-qtpdf-private-headers-devel
5.15.16-1.1
libqt5-qtwebengine
5.15.16-1.1
libqt5-qtwebengine-devel
5.15.16-1.1
libqt5-qtwebengine-examples
5.15.16-1.1
libqt5-qtwebengine-private-headers-devel
5.15.16-1.1
libQt5Pdf5
5.15.16-1.1
libQt5PdfWidgets5
5.15.16-1.1
libvlc5
3.0.19-1.1, 3.0.20-bp154.2.6.1, 3.0.20-bp155.2.3.1
Timeline
Added to Industry KEV feed
Sep 25, 2023
Added to CISA KEV
Oct 2, 2023
Added to CIRCL KEV
Oct 2, 2023
Added to ENISA EUVD
Oct 2, 2023
Publicly disclosed
Nov 29, 2023
Last updated
Sep 10, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-787 Out-of-bounds Write
References
- advisoryRHSA-2023:5426
- advisoryRHSA-2023:5427
- advisoryRHSA-2023:5428
- advisoryRHSA-2023:5429
- advisoryRHSA-2023:5430
FAQ
Common Questions.
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.
Affected: Chrome (Google) versions >= 117.0.5938.132; Edge (Microsoft) versions 116.0.1938.98, 117.0.2045.47; Edge Chromium (Microsoft) versions 116.0.5845.229, 117.0.5938.132, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 25, 2023.
Yes. It was added on Oct 2, 2023 with a federal remediation due date of Oct 23, 2023.
Public exploit code is available.
Fixed versions are available, including Ipados 17.0.3, Iphone OS 17.0.3, Chrome 117.0.5938.132.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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