HIGH
CVE-2019-5436
CWE-122Published: May 28, 2019· Updated: Jun 17, 2026
7.8
CVSS v3.1
Official Description
A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4 through 7.64.1.
Technical Analysis
CVE-2019-5436 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
Debian1 product(s)
debian linux
f51 product(s)
traffix signaling delivery controller
Fedora1 product(s)
fedora
haxx1 product(s)
libcurl
netapp3 product(s)
hci management nodesolidfiresteelstore cloud integrated storage
openSUSE1 product(s)
leap
Oracle3 product(s)
enterprise manager ops centermysql serveross support tools
Source: NVD CPE · 15 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (28)
→
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00008.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00017.htmlMailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2019/09/11/6Mailing List · Patch · Third Party Advisory
→
https://curl.haxx.se/docs/CVE-2019-5436.htmlExploit · Patch · Vendor Advisory
→
https://seclists.org/bugtraq/2020/Feb/36Mailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/202003-29Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20190606-0004/Third Party Advisory
→
https://support.f5.com/csp/article/K55133295Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4633Third Party Advisory
→
https://www.oracle.com/security-alerts/cpuapr2020.htmlThird Party Advisory
→
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlPatch · Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00008.htmlMailing List · Third Party Advisory
Quick Facts
CVE IDCVE-2019-5436
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-122
CISA KEVNo
Affected7 vendor(s)
PublishedMay 28, 2019
Related CVEs (CWE-122)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-5436 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.