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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| curl | curl | Fixed in 7.65.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | curl | 7.64.0-4 | — |
| Debian 13 | curl | 7.64.0-4 | — |
| Debian 12 | curl | 7.64.0-4 | — |
| Debian 8 | curl | 7.38.0-4+deb8u15 | DLA-1804-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | curl | 7.58.0-2ubuntu3.7 | USN-3993-1 |
| Ubuntu 16.04 LTS | curl | 7.47.0-1ubuntu2.13 | USN-3993-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | curl | 7.35.0-1ubuntu2.20+esm2 | USN-3993-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | curl +3 | 7.61.1-12.el8 | RHSA-2020:1792 |
| RHEL 7 | curl +2 | 7.29.0-57.el7 | RHSA-2020:1020 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7.7 EUS | curl +2 | 7.29.0-54.el7_7.3 | RHSA-2020:2505 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | curl | 7.60.0-3.20.1 | SUSE-SU-2019:1357-2 |
| SLES 15 | curl | 7.60.0-3.20.1 | SUSE-SU-2019:1357-1 |
| SLES 12 SP4 | curl | 7.60.0-4.6.1 | SUSE-SU-2019:2009-1 |
| SLES 12 SP3 | curl | 7.37.0-37.40.1 | SUSE-SU-2019:1363-1 |
| SLES 12 SP2 | curl | 7.37.0-37.40.1 | SUSE-SU-2019:1363-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | curl | 7.37.0-37.40.1 | SUSE-SU-2019:1363-1 |
| SLES 12 | curl | 7.37.0-37.40.1 | SUSE-SU-2019:1363-1 |
| SLES 11 SP4 | curl | 7.37.0-70.41.2 | SUSE-SU-2019:14064-1 |
| SLES 11 | curl-openssl1 | 7.37.0-70.41.2 | SUSE-SU-2019:14064-1 |
| SLES for SAP 12 SP4 | curl | 7.60.0-4.6.1 | SUSE-SU-2019:2009-1 |
| SLES for SAP 12 SP3 | curl | 7.37.0-37.40.1 | SUSE-SU-2019:1363-1 |
| SLES for SAP 12 SP2 | curl | 7.37.0-37.40.1 | SUSE-SU-2019:1363-1 |
| SLES for SAP 12 SP1 | curl | 7.37.0-37.40.1 | SUSE-SU-2019:1363-1 |
| SUSE OpenStack Cloud 7 | curl | 7.37.0-37.40.1 | SUSE-SU-2019:1363-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | curl | 7.37.0-70.41.2 | SUSE-SU-2019:14064-1 |
| SUSE Enterprise Storage 4 | curl | 7.37.0-37.40.1 | SUSE-SU-2019:1363-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | curl | 7.79.1-1.1 | openSUSE-SU-2024:10582-1 |
| openSUSE Leap 15.1 | curl +1 | 7.60.0-lp151.5.3.1 | openSUSE-SU-2019:1508-1 |
| openSUSE Leap 15.0 | curl +1 | 7.60.0-lp151.5.3.1 | openSUSE-SU-2019:1508-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | curl | 7.65.0-r0 | — |
| Alpine v3.23 | curl | 7.65.0-r0 | — |
| Alpine v3.22 | curl | 7.65.0-r0 | — |
| Alpine v3.21 | curl | 7.65.0-r0 | — |
| Alpine v3.20 | curl | 7.65.0-r0 | — |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | curl | 7.65.0-r0 | — |
| Alpine v3.18 | curl | 7.65.0-r0 | — |
| Alpine v3.17 | curl +1 | 7.65.0-r0 | — |
| Alpine v3.16 | curl +1 | 7.65.0-r0 | — |
| Alpine v3.15 | curl | 7.65.0-r0 | — |
| Alpine v3.14 | curl | 7.65.0-r0 | — |
| Alpine v3.13 | curl | 7.65.0-r0 | — |
| Alpine v3.12 | curl | 7.65.0-r0 | — |
| Alpine v3.11 | curl | 7.65.0-r0 | — |
| Alpine v3.10 | curl | 7.65.0-r0 | — |
| Alpine v3.9 | curl | 7.64.0-r2 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | curl +2 | 7.61.1-11.amzn2.0.2 | ALAS2-2019-1233 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | curl +3 | 7.61.1-12.el8 | ELSA-2020-1792 |
| Oracle Linux 7 | curl +2 | 7.29.0-57.0.1.el7 | ELSA-2020-1020 |
Advisories 21
- WID-SEC-2026-4026 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 18, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- RHSA-2020:2505 Red Hat Security Advisory: curl security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2020:1792 Red Hat Security Advisory: curl security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2020:1020 Red Hat Security Advisory: curl security and bug fix update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- USN-3993-1 curl vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-3993-2 curl vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-1804-1 curl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10582-1 curl-7.79.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1357-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1363-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:14064-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2009-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1508-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2026-0180 Dell Data Protection Advisor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 20, 2026
- WID-SEC-2023-1639 cURL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 6, 2025
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- SUSE-SU-2019:1357-2 Security update for curl SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2020-1792 Moderate: curl security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 5, 2020
- ELSA-2020-1020 Low: curl security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 6, 2020
- ALAS2-2019-1233 Low: curl security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 22, 2019
References
- openSUSE-SU-2019:1492 vendor-advisory
- openSUSE-SU-2019:1508 vendor-advisory
- FEDORA-2019-697de0501f vendor-advisory
- [oss-security] 20190911 [SECURITY ADVISORY] curl: TFTP small blocksize heap buffer overflow mailing-list
- DSA-4633 vendor-advisory
- 20200225 [SECURITY] [DSA 4633-1] curl security update mailing-list
- GLSA-202003-29 vendor-advisory
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://security.netapp.com/advisory/ntap-20190606-0004/
- https://curl.haxx.se/docs/CVE-2019-5436.html
- https://support.f5.com/csp/article/K55133295
- https://support.f5.com/csp/article/K55133295?utm_source=f5support&%3Butm_medium=RSS