CRITICAL
Out-of-bounds write in the (1) mb_detect_encoding, (2) mb_send_mail, and (3) mb_detect_order functions in Facebook HHVM before 3.15.0 allows attackers to have unspecified impact via unknown vectors
Published Feb 17, 2017
9.8
CRITICALCVSS 3.0
EPSS 2.21%
Description
Out-of-bounds write in the (1) mb_detect_encoding, (2) mb_send_mail, and (3) mb_detect_order functions in Facebook HHVM before 3.15.0 allows attackers to have unspecified impact via unknown vectors.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.21% 0.02212
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02212
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.21% (0.02212) | 81.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.21% (0.02212) | 80.23th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.79% (0.00789) | 72.19th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.34% (0.00339) | 72.23th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.34% (0.00339) | 70.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.34% (0.00339) | 66.78th | 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) |
Weaknesses (1)
References (3)
- http://www.openwall.com/lists/oss-security/2016/08/11/1 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/08/19/1 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- https://github.com/facebook/hhvm/commit/365abe807cab2d60dc9ec307292a06181f77a9c2 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2016/08/11/1 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2016/08/19/1 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| https://github.com/facebook/hhvm/commit/365abe807cab2d60dc9ec307292a06181f77a9c2 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Feb 17, 2017
Updated Aug 6, 2024
Reserved Aug 18, 2016
Link CVE-2016-6870
CISA Vulnrichment
Updated n/a