Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-15670

22
FAUCET Score

CVE-2020-15670 describes memory safety bugs in Mozilla Firefox, Firefox ESR, Thunderbird, and Firefox for Android versions prior to their respective 80/78.2 releases. These bugs could lead to memory corruption, potentially allowing an attacker to execute arbitrary code with sufficient effort. Rated 8.8 HIGH on CVSS, this vulnerability is network-exploitable with low attack complexity and user interaction required, posing high impacts to confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed on the CISA KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 80.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:-:*:*
< 80.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:android:*:*
< 78.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
< 78.2CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.08%
Probability of exploitation in next 30 days
EPSS Percentile
61.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0108 is in the 61st percentile among its peer group of 14,875 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2020-15670Important

Mozilla: Memory safety bugs fixed in Firefox 80 and Firefox ESR 78.2

Aug 25, 2020

References

bugzilla.mozilla.org / buglist.cgi
Broken LinkIssue TrackingVendor Advisory
mozilla.org / security/advisories/mfsa2020-36
Release NotesVendor Advisory
mozilla.org / security/advisories/mfsa2020-38
Release NotesVendor Advisory
mozilla.org / security/advisories/mfsa2020-39
Release NotesVendor Advisory
mozilla.org / security/advisories/mfsa2020-41
Release NotesVendor Advisory