php: Multiple heap overflows due to integer overflows
Published May 22, 2016
9.8
CRITICALCVSS 3.1
EPSS 5.17%
Description
Integer overflow in the xml_utf8_encode function in ext/xml/xml.c in PHP before 7.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a long argument to the utf8_encode function, leading to a heap-based buffer overflow.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
php
Not affected
Red Hat Enterprise Linux 5
php53
Not affected
Red Hat Enterprise Linux 6
php
Not affected
Red Hat Enterprise Linux 7
php
Not affected
Red Hat Software Collections
php54-php
Not affected
Red Hat Software Collections
php55-php
Not affected
Red Hat Software Collections
rh-php56-php
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | php | Not affected | n/a |
| Red Hat Enterprise Linux 5 | php53 | Not affected | n/a |
| Red Hat Enterprise Linux 6 | php | Not affected | n/a |
| Red Hat Enterprise Linux 7 | php | Not affected | n/a |
| Red Hat Software Collections | php54-php | Not affected | n/a |
| Red Hat Software Collections | php55-php | Not affected | n/a |
| Red Hat Software Collections | rh-php56-php | Not affected | n/a |
No package ranges for this CVE.
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:H/I:H/A:H
No CVSS v3.0 score for this CVE.
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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.17% (0.05175) | 92.19th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.17% (0.05175) | 91.35th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.36% (0.00362) | 55.40th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.56% (0.01563) | 69.86th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.36% (0.00362) | 56.18th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.54% (0.00539) | 78.02th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.54% (0.00539) | 76.56th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.54% (0.00539) | 73.70th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
References (7)
- http://php.net/ChangeLog-7.php x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.openwall.com/lists/oss-security/2016/04/28/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-4344 Vendor Advisory
- https://bugs.php.net/bug.php?id=71637 x_refsource_CONFIRMExploitIssue TrackingPatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1315339 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-4344
- https://www.cve.org/CVERecord?id=CVE-2016-4344
| Link | Providers | Tags |
|---|---|---|
| http://php.net/ChangeLog-7.php | x_refsource_CONFIRMRelease NotesVendor Advisory | |
| http://www.openwall.com/lists/oss-security/2016/04/28/2 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2016-4344 | Vendor Advisory | |
| https://bugs.php.net/bug.php?id=71637 | x_refsource_CONFIRMExploitIssue TrackingPatchVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1315339 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-4344 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-4344 |
Change history (0)
No recorded changes yet.