CVE-2013-4788
The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not…
- 5.1MediumCVSS base score
- 11.4%Exploitation in 30 daysEPSS · top 3.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- glibc and eglibc 2.5/2.7/2.13 - Local Buffer Overflow (Exploit-DB entry) (opens in a new tab)
EDB-ID 28657local, linuxpublished 30 Sept 2013Not verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 3 months later
· 3 months later
Published
- 11 years later
· 11 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 11.4% · top 3.9% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.1.
Affected products
n/a
- affected n/a
References
References7
- 20150907 Glibc Pointer guarding weakness (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- MDVSA-2013:284 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- [oss-security] 20130716 Re: CVE-2013-4788 - Eglibc PTR MANGLE bug (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 61183 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- GLSA-201503-04 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- MDVSA-2013:283 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- http://hmarco.org/bugs/CVE-2013-4788.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2013-4634 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2013-4788)Record last updated .