icu: integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp
Published Nov 4, 2018
9.8
CRITICALCVSS 3.0
EPSS 2.92%
Description
International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp.
Affected products
No data.
- 63.1
No data.
Red Hat Enterprise Linux 5
icu
Not affected
Red Hat Enterprise Linux 5
java-1.6.0-openjdk
Not affected
Red Hat Enterprise Linux 5
java-1.7.0-openjdk
Not affected
Red Hat Enterprise Linux 6
icu
Not affected
Red Hat Enterprise Linux 6
java-1.6.0-openjdk
Not affected
Red Hat Enterprise Linux 6
java-1.7.0-openjdk
Not affected
Red Hat Enterprise Linux 6
java-1.8.0-openjdk
Not affected
Red Hat Enterprise Linux 7
icu
Not affected
Red Hat Enterprise Linux 7
java-1.6.0-openjdk
Not affected
Red Hat Enterprise Linux 7
java-1.7.0-openjdk
Not affected
Red Hat Enterprise Linux 7
java-1.8.0-openjdk
Not affected
Red Hat Enterprise Linux 7
webkitgtk4
Not affected
Red Hat Enterprise Linux 8
icu
Not affected
Red Hat Virtualization 4
icu
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | icu | Not affected | n/a |
| Red Hat Enterprise Linux 5 | java-1.6.0-openjdk | Not affected | n/a |
| Red Hat Enterprise Linux 5 | java-1.7.0-openjdk | Not affected | n/a |
| Red Hat Enterprise Linux 6 | icu | Not affected | n/a |
| Red Hat Enterprise Linux 6 | java-1.6.0-openjdk | Not affected | n/a |
| Red Hat Enterprise Linux 6 | java-1.7.0-openjdk | Not affected | n/a |
| Red Hat Enterprise Linux 6 | java-1.8.0-openjdk | Not affected | n/a |
| Red Hat Enterprise Linux 7 | icu | Not affected | n/a |
| Red Hat Enterprise Linux 7 | java-1.6.0-openjdk | Not affected | n/a |
| Red Hat Enterprise Linux 7 | java-1.7.0-openjdk | Not affected | n/a |
| Red Hat Enterprise Linux 7 | java-1.8.0-openjdk | Not affected | n/a |
| Red Hat Enterprise Linux 7 | webkitgtk4 | Not affected | n/a |
| Red Hat Enterprise Linux 8 | icu | Not affected | n/a |
| Red Hat Virtualization 4 | icu | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of icu as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they did not include the vulnerable class. This issue did not affect the versions of java-1.6.0-openjdk, java-1.7.0-openjdk and java-1.8.0-openjdk as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they did not include the vulnerable class. This issue did not affect the versions of webkitgtk4 as shipped with Red Hat Enterprise Linux 7 as they did not include the vulnerable class.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.92% (0.02918) | 86.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.92% (0.02918) | 85.18th | v5 (v2026.06.15) |
| May 3, 2026 | 0.65% (0.00645) | 70.77th | v4 (v2025.03.14) |
| Nov 21, 2025 | 2.10% (0.02103) | 83.53th | v4 (v2025.03.14) |
| Nov 18, 2025 | 0.67% (0.00671) | 69.05th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.78% (0.02778) | 84.78th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.29% (0.05287) | 82.99th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.78% (0.02778) | 85.11th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.26% (0.00263) | 66.41th | v3 (v2023.03.01) |
| May 24, 2024 | 0.26% (0.00263) | 66.00th | v3 (v2023.03.01) |
| May 10, 2024 | 0.22% (0.00225) | 60.50th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.19% (0.00190) | 55.45th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.17% (0.00166) | 52.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.37% (0.00374) | 68.44th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v1 |
| Jan 6, 2022 | 0.83% (0.00833) | 23.96th | v1 |
| Sep 1, 2021 | 0.83% (0.00833) | 57.50th | v1 |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (7)
- https://access.redhat.com/security/cve/CVE-2018-18928 Vendor Advisory
- https://bugs.chromium.org/p/chromium/issues/detail?id=900059 x_refsource_MISCThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1646702 Issue Tracking
- https://github.com/unicode-org/icu/commit/53d8c8f3d181d87a6aa925b449b51c4a2c922a51 x_refsource_MISCPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-18928
- https://unicode-org.atlassian.net/browse/ICU-20246 x_refsource_MISCVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-18928
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2018-18928 | Vendor Advisory | |
| https://bugs.chromium.org/p/chromium/issues/detail?id=900059 | x_refsource_MISCThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1646702 | Issue Tracking | |
| https://github.com/unicode-org/icu/commit/53d8c8f3d181d87a6aa925b449b51c4a2c922a51 | x_refsource_MISCPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-18928 | ||
| https://unicode-org.atlassian.net/browse/ICU-20246 | x_refsource_MISCVendor Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-18928 |
Change history (0)
No recorded changes yet.