High severity7.5NVD Advisory· Published Jul 30, 2021· Updated Jun 17, 2026
CVE-2021-36386
CVE-2021-36386
Description
report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic platform results in an impact beyond an inconvenience to the client user.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
34- Fetchmail/Fetchmaildescription
- osv-coords32 versionspkg:rpm/almalinux/fetchmailpkg:rpm/opensuse/fetchmail&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/fetchmail&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/fetchmail&distro=openSUSE%20Tumbleweedpkg:rpm/suse/fetchmail&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP3pkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/fetchmail&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/fetchmail&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/fetchmail&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/fetchmail&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/fetchmail&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/fetchmail&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/fetchmail&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 6.4.24-1.el8+ 31 more
- (no CPE)range: < 6.4.24-1.el8
- (no CPE)range: < 6.3.26-lp152.6.6.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.4.21-2.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-13.12.1
- (no CPE)range: < 6.3.26-13.12.1
- (no CPE)range: < 6.3.26-13.12.1
- (no CPE)range: < 6.3.26-13.12.1
- (no CPE)range: < 6.3.26-13.12.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-13.12.1
- (no CPE)range: < 6.3.26-13.12.1
- (no CPE)range: < 6.3.26-13.12.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-20.14.1
- (no CPE)range: < 6.3.26-13.12.1
- (no CPE)range: < 6.3.26-13.12.1
- (no CPE)range: < 6.3.26-13.12.1
Patches
Vulnerability mechanics
References
7- www.openwall.com/lists/oss-security/2021/07/28/5nvdMailing ListPatchThird Party Advisory
- security.gentoo.org/glsa/202209-14nvdThird Party Advisory
- www.fetchmail.info/fetchmail-SA-2021-01.txtnvdVendor Advisory
- www.fetchmail.info/security.htmlnvdVendor Advisory
- www.openwall.com/lists/oss-security/2021/08/09/1nvdMailing List
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AGYO5AHSXTCKA4NQC2Z4H3XMMYNAGC77/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIXKO6QW3AUHGJVWKJXBCOVBYJUJRBFC/nvd
News mentions
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