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CVE-2019-12854Due to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7 may access unallocated memory. On systems with memory access…
- 7.5HighCVSS base score
- 11.7%Exploitation in 30 daysEPSS · top 3.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Due to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7 may access unallocated memory. On systems with memory access protections, this can cause the CGI process to terminate unexpectedly, resulting in a denial of service for all clients using it.
Timeline
ID reserved
By mitre
- 2 months later
· 2 months later
Published
- 5 years later
· 5 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 | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 11.7% · top 3.9% of all CVEs (14 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
References9
- http://www.squid-cache.org/Advisories/SQUID-2019_1.txt (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.squid-cache.org/show_bug.cgi?id=4937 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-2981a957716c61ff7e21eee1d7d6eb5a237e466d.patch (opens in a new tab)x_refsource_MISCx_transferred
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-4507 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 20190825 [SECURITY] [DSA 4507-1] squid security update (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- openSUSE-SU-2019:2540 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2019:2541 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-4213-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_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-2019-4434 (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-2019-12854)Record last updated .