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Vulnerability details: VCID-5hjp-yuf4-dqd6
Vulnerability ID VCID-5hjp-yuf4-dqd6
Aliases CVE-2016-2808
Summary The CESG, the Information Security Arm of GCHQ, reported that the JavaScript .watch() method could be used to overflow the 32-bit generation count of the underlying HashMap, resulting in a write to an invalid entry. Under the right conditions this write could lead to arbitrary code execution. The overflow takes considerable time and a malicious page would require a user to keep it open for the duration of the attack.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
epss 0.00681 https://api.first.org/data/v1/epss?cve=CVE-2016-2808
cvssv2 5.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2016-47
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-2808.json
https://api.first.org/data/v1/epss?cve=CVE-2016-2808
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1330286 https://bugzilla.redhat.com/show_bug.cgi?id=1330286
CVE-2016-2808 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2808
mfsa2016-47 https://www.mozilla.org/en-US/security/advisories/mfsa2016-47
RHSA-2016:0695 https://access.redhat.com/errata/RHSA-2016:0695
USN-2936-1 https://usn.ubuntu.com/2936-1/
No exploits are available.
Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Exploit Prediction Scoring System (EPSS)
Percentile 0.70666
EPSS Score 0.00681
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:10:16.050287+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2016/mfsa2016-47.md 37.0.0