php: Serializing or unserializing COM objects crashes
Published Nov 20, 2018
7.5
HIGHCVSS 3.0
EPSS 4.58%
Description
ext/standard/var_unserializer.c in PHP 5.x through 7.1.24 allows attackers to cause a denial of service (application crash) via an unserialize call for the com, dotnet, or variant class.
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 Enterprise Linux 8
php
Not affected
Red Hat Software Collections
rh-php70-php
Not affected
Red Hat Software Collections
rh-php71-php
Not affected
Red Hat Software Collections
rh-php72-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 Enterprise Linux 8 | php | Not affected | n/a |
| Red Hat Software Collections | rh-php70-php | Not affected | n/a |
| Red Hat Software Collections | rh-php71-php | Not affected | n/a |
| Red Hat Software Collections | rh-php72-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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.58% (0.04584) | 91.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.58% (0.04584) | 90.40th | v5 (v2026.06.15) |
| Jul 30, 2025 | 1.00% (0.01003) | 76.09th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.03% (0.02027) | 82.17th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.33% (0.04327) | 81.16th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.10% (0.00101) | 42.08th | v3 (v2023.03.01) |
| Apr 12, 2024 | 0.10% (0.00101) | 40.88th | v3 (v2023.03.01) |
| Dec 2, 2023 | 0.13% (0.00127) | 46.92th | v3 (v2023.03.01) |
| Nov 14, 2023 | 0.18% (0.00180) | 55.09th | v3 (v2023.03.01) |
| Sep 26, 2023 | 0.16% (0.00157) | 51.72th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00167) | 51.65th | 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 | 1.04% (0.01036) | 27.56th | v1 |
| Jan 6, 2022 | 1.04% (0.01036) | 26.95th | v1 |
| Sep 1, 2021 | 1.04% (0.01036) | 62.47th | v1 |
| Apr 14, 2021 | 1.04% (0.01036) | 0.00th | v1 |
References (7)
- http://www.securityfocus.com/bid/105989 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-19396 Vendor Advisory
- https://bugs.php.net/bug.php?id=77177 x_refsource_MISCExploitIssue TrackingMailing ListVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1652716 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2018-19396
- https://security.netapp.com/advisory/ntap-20181221-0005/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-19396
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105989 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-19396 | Vendor Advisory | |
| https://bugs.php.net/bug.php?id=77177 | x_refsource_MISCExploitIssue TrackingMailing ListVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1652716 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-19396 | ||
| https://security.netapp.com/advisory/ntap-20181221-0005/ | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-19396 |
Change history (0)
No recorded changes yet.