PHP 5.2.1 allows context-dependent attackers to read portions of heap memory by executing certain scripts with a serialized data input string beginning with S:, which does not properly track the number of input bytes being processed
Published Mar 24, 2007
7.8
HIGHCVSS 2.0
EPSS 7.21%
Description
PHP 5.2.1 allows context-dependent attackers to read portions of heap memory by executing certain scripts with a serialized data input string beginning with S:, which does not properly track the number of input bytes being processed.
Affected products
Remediation
Red Hat statement
Not vulnerable. These issues did not affect the versions of PHP as shipped with Red Hat Enterprise Linux 2.1, 3, 4, 5, Stronghold 4.0, or Red Hat Application Stack 1.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:C/I:N/A:N
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 (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.21% (0.07210) | 94.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.21% (0.07210) | 93.49th | v5 (v2026.06.15) |
| Dec 28, 2025 | 6.79% (0.06794) | 91.00th | v4 (v2025.03.14) |
| Dec 27, 2025 | 5.14% (0.05140) | 89.57th | v4 (v2025.03.14) |
| Oct 28, 2025 | 7.61% (0.07608) | 91.42th | v4 (v2025.03.14) |
| Oct 27, 2025 | 5.77% (0.05773) | 90.09th | v4 (v2025.03.14) |
| Oct 1, 2025 | 7.61% (0.07608) | 91.52th | v4 (v2025.03.14) |
| Mar 30, 2025 | 6.23% (0.06229) | 89.94th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.82% (0.07819) | 86.35th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.23% (0.06229) | 90.19th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.80% (0.00801) | 82.37th | v3 (v2023.03.01) |
| Mar 4, 2024 | 0.80% (0.00801) | 81.19th | v3 (v2023.03.01) |
| Dec 18, 2023 | 0.90% (0.00896) | 80.81th | v3 (v2023.03.01) |
| Nov 10, 2023 | 0.93% (0.00927) | 81.16th | v3 (v2023.03.01) |
| Aug 25, 2023 | 0.95% (0.00949) | 81.22th | v3 (v2023.03.01) |
| Jul 18, 2023 | 0.89% (0.00890) | 80.45th | v3 (v2023.03.01) |
| Jun 12, 2023 | 0.84% (0.00842) | 79.77th | v3 (v2023.03.01) |
| May 5, 2023 | 0.87% (0.00868) | 80.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.71% (0.00709) | 77.35th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.79% (0.06790) | 92.15th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.79% (0.06790) | 91.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.79% (0.06790) | 79.54th | v2 (v2022.01.01) |
No CWE recorded.
References (9)
- http://secunia.com/advisories/24630 third-party-advisoryx_refsource_SECUNIA
- http://us2.php.net/releases/5_2_2.php x_refsource_CONFIRM
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:126 vendor-advisoryx_refsource_MANDRIVA
- http://www.php-security.org/MOPB/MOPB-29-2007.html x_refsource_MISCExploit
- http://www.securityfocus.com/bid/23105 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2007-1649 Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/33170 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2007-1649
- https://www.cve.org/CVERecord?id=CVE-2007-1649
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/24630 | third-party-advisoryx_refsource_SECUNIA | |
| http://us2.php.net/releases/5_2_2.php | x_refsource_CONFIRM | |
| http://www.mandriva.com/security/advisories?name=MDVSA-2008:126 | vendor-advisoryx_refsource_MANDRIVA | |
| http://www.php-security.org/MOPB/MOPB-29-2007.html | x_refsource_MISCExploit | |
| http://www.securityfocus.com/bid/23105 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2007-1649 | Vendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/33170 | vdb-entryx_refsource_XF | |
| https://nvd.nist.gov/vuln/detail/CVE-2007-1649 | ||
| https://www.cve.org/CVERecord?id=CVE-2007-1649 |
Change history (0)
No recorded changes yet.