fmtlib version prior to version 4.1.0 (before commit 0555cea5fc0bf890afe0071a558e44625a34ba85) contains a Memory corruption (SIGSEGV), CWE-134 vulnerability in fmt::print() library function that can result in Denial of Service
Published Feb 9, 2018
7.5
HIGHCVSS 3.1
EPSS 1.35%
Description
fmtlib version prior to version 4.1.0 (before commit 0555cea5fc0bf890afe0071a558e44625a34ba85) contains a Memory corruption (SIGSEGV), CWE-134 vulnerability in fmt::print() library function that can result in Denial of Service. This attack appear to be exploitable via Specifying an invalid format specifier in the fmt::print() function results in a SIGSEGV (memory corruption, invalid write). This vulnerability appears to have been fixed in after commit 8cf30aa2be256eba07bb1cefb998c52326e846e7.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/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 v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.35% (0.01352) | 70.54th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.35% (0.01352) | 70.31th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.11% (0.00109) | 44.55th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.11% (0.00108) | 42.93th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00089) | 36.29th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.64% (0.00635) | 17.82th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.64% (0.00635) | 0.00th | v1 |
References (2)
- https://github.com/fmtlib/fmt/commit/8cf30aa2be256eba07bb1cefb998c52326e846e7 x_refsource_CONFIRMPatch
- https://github.com/fmtlib/fmt/issues/642 x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/fmtlib/fmt/commit/8cf30aa2be256eba07bb1cefb998c52326e846e7 | x_refsource_CONFIRMPatch | |
| https://github.com/fmtlib/fmt/issues/642 | x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory |
Change history (0)
No recorded changes yet.