Is CVE-2017-7845 in the CISA KEV catalog?

No. CVE-2017-7845 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-7845?

CVE-2017-7845 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2017-7845?

CVE-2017-7845 has an EPSS score of 3.21% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-7845?

Upgrade DeveloperEdition to 57.0.2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2017-7845

HIGHEPSS 87th pctl

8.8

CVSS v3

NVD

Description

A buffer overflow occurs when drawing and validating elements using Direct 3D 9 with the ANGLE graphics library, used for WebGL content. This is due to an incorrect value being passed within the library during checks and results in a potentially exploitable crash. Note: This attack only affects Windows operating systems. Other operating systems are unaffected. This vulnerability affects Thunderbird < 52.5.2, Firefox ESR < 52.5.2, and Firefox < 57.0.2.

CWE-119Buffer Overflow

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:57.0.2Fixed in:57.0.2Mozilla

Affected:52.5.2Fixed in:52.5.2Mozilla

Mozilla Firefox (en-US)Windows application

Affected:57.0.2Fixed in:57.0.2Mozilla

Affected:52.5.2Fixed in:52.5.2Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:52.5.2Fixed in:52.5.2Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

3.21%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Vendor Advisory3

Third-Party Advisory2

Issue Tracking1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-25.