The vulnerability of the MapServer geographic data rendering parser’s SLD system, related to buffer overflows, allows attackers to cause service failures.
🗓️ 24 Aug 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 26 Views
| Reporter | Title | Published | Views | Family All 34 |
|---|---|---|---|---|
 | CVE-2026-33721 | 27 Mar 202600:15 | – | attackerkb |
 | ANT-2026-9SZMPW41 · MapServer · Heap Buffer Overflow | 20 May 202607:40 | – | anthropic |
 | Astra Linux – Vulnerability in mapserver | 24 Aug 202610:19 | – | astralinux |
 | Mapserver 缓冲区错误漏洞 | 27 Mar 202600:00 | – | cnnvd |
 | CVE-2026-33721 | 27 Mar 202600:15 | – | cve |
 | CVE-2026-33721 MapServer has heap buffer overflow in SLD `Categorize` Threshold parsing | 27 Mar 202600:15 | – | cvelist |
 | [SECURITY] [DLA 4537-1] mapserver security update | 17 Apr 202615:49 | – | debian |
 | CVE-2026-33721 | 27 Mar 202600:15 | – | debiancve |
 | Debian dla-4537 : cgi-mapserver - security update | 20 Apr 202600:00 | – | nessus |
| Fedora 42 : mapserver (2026-178c482e71) | 5 Apr 202600:00 | – | nessus |
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17 Sep 2026 00:00Current
6.3Medium risk
Vulners AI Score6.3
CVSS 25
CVSS 35.3
EPSS0.00865