CVE-2026-57962
Denial-of-service via malicious LDAP address-book server
CVE-2026-57962 is fixed in 134 products on 3 platforms, first by Mozilla Thunderbird 152.0.1, released June 30, 2026. It is not reported as exploited. Patch Radar priority: Routine.
RoutineFixed on 3 platforms
CVSS
5.3
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0034
27th percentile
A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Thunderbird (af) | 152.0.1 | Mozilla Thunderbird (af) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (ar) | 152.0.1 | Mozilla Thunderbird (ar) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (ast) | 152.0.1 | Mozilla Thunderbird (ast) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (be) | 152.0.1 | Mozilla Thunderbird (be) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (bg) | 152.0.1 | Mozilla Thunderbird (bg) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (br) | 152.0.1 | Mozilla Thunderbird (br) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (ca) | 152.0.1 | Mozilla Thunderbird (ca) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (cak) | 152.0.1 | Mozilla Thunderbird (cak) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (cs) | 152.0.1 | Mozilla Thunderbird (cs) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (cy) | 152.0.1 | Mozilla Thunderbird (cy) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (da) | 152.0.1 | Mozilla Thunderbird (da) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (de) | 152.0.1 | Mozilla Thunderbird (de) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (dsb) | 152.0.1 | Mozilla Thunderbird (dsb) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (el) | 152.0.1 | Mozilla Thunderbird (el) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (en-CA) | 152.0.1 | Mozilla Thunderbird (en-CA) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (en-GB) | 152.0.1 | Mozilla Thunderbird (en-GB) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (en-US) | 152.0.1 | Mozilla Thunderbird (en-US) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (es-AR) | 152.0.1 | Mozilla Thunderbird (es-AR) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (es-ES) | 152.0.1 | Mozilla Thunderbird (es-ES) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (es-MX) | 152.0.1 | Mozilla Thunderbird (es-MX) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (et) | 152.0.1 | Mozilla Thunderbird (et) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (eu) | 152.0.1 | Mozilla Thunderbird (eu) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (fi) | 152.0.1 | Mozilla Thunderbird (fi) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (fr) | 152.0.1 | Mozilla Thunderbird (fr) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (fy-NL) | 152.0.1 | Mozilla Thunderbird (fy-NL) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (ga-IE) | 152.0.1 | Mozilla Thunderbird (ga-IE) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (gd) | 152.0.1 | Mozilla Thunderbird (gd) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (gl) | 152.0.1 | Mozilla Thunderbird (gl) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (he) | 152.0.1 | Mozilla Thunderbird (he) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (hr) | 152.0.1 | Mozilla Thunderbird (hr) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (hsb) | 152.0.1 | Mozilla Thunderbird (hsb) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (hu) | 152.0.1 | Mozilla Thunderbird (hu) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (hy-AM) | 152.0.1 | Mozilla Thunderbird (hy-AM) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (id) | 152.0.1 | Mozilla Thunderbird (id) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (is) | 152.0.1 | Mozilla Thunderbird (is) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (it) | 152.0.1 | Mozilla Thunderbird (it) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (ja) | 152.0.1 | Mozilla Thunderbird (ja) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (ka) | 152.0.1 | Mozilla Thunderbird (ka) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (kab) | 152.0.1 | Mozilla Thunderbird (kab) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (kk) | 152.0.1 | Mozilla Thunderbird (kk) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (ko) | 152.0.1 | Mozilla Thunderbird (ko) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (lt) | 152.0.1 | Mozilla Thunderbird (lt) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (lv) | 152.0.1 | Mozilla Thunderbird (lv) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (ms) | 152.0.1 | Mozilla Thunderbird (ms) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (nb-NO) | 152.0.1 | Mozilla Thunderbird (nb-NO) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (nl) | 152.0.1 | Mozilla Thunderbird (nl) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (nn-NO) | 152.0.1 | Mozilla Thunderbird (nn-NO) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (pa-IN) | 152.0.1 | Mozilla Thunderbird (pa-IN) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (pl) | 152.0.1 | Mozilla Thunderbird (pl) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (pt-BR) | 152.0.1 | Mozilla Thunderbird (pt-BR) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (pt-PT) | 152.0.1 | Mozilla Thunderbird (pt-PT) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (rm) | 152.0.1 | Mozilla Thunderbird (rm) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (ro) | 152.0.1 | Mozilla Thunderbird (ro) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (ru) | 152.0.1 | Mozilla Thunderbird (ru) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (sk) | 152.0.1 | Mozilla Thunderbird (sk) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (sl) | 152.0.1 | Mozilla Thunderbird (sl) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (sq) | 152.0.1 | Mozilla Thunderbird (sq) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (sr) | 152.0.1 | Mozilla Thunderbird (sr) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (sv-SE) | 152.0.1 | Mozilla Thunderbird (sv-SE) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (th) | 152.0.1 | Mozilla Thunderbird (th) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (tr) | 152.0.1 | Mozilla Thunderbird (tr) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (uk) | 152.0.1 | Mozilla Thunderbird (uk) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (uz) | 152.0.1 | Mozilla Thunderbird (uz) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (vi) | 152.0.1 | Mozilla Thunderbird (vi) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (zh-CN) | 152.0.1 | Mozilla Thunderbird (zh-CN) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird (zh-TW) | 152.0.1 | Mozilla Thunderbird (zh-TW) 152.0.1 | Jul 1, 2026 |
| Mozilla Thunderbird ESR (af) | 153.0.1 | Mozilla Thunderbird ESR (af) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ar) | 153.0.1 | Mozilla Thunderbird ESR (ar) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ast) | 153.0.1 | Mozilla Thunderbird ESR (ast) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (be) | 153.0.1 | Mozilla Thunderbird ESR (be) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (bg) | 153.0.1 | Mozilla Thunderbird ESR (bg) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (br) | 153.0.1 | Mozilla Thunderbird ESR (br) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ca) | 153.0.1 | Mozilla Thunderbird ESR (ca) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (cak) | 153.0.1 | Mozilla Thunderbird ESR (cak) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (cs) | 153.0.1 | Mozilla Thunderbird ESR (cs) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (cy) | 153.0.1 | Mozilla Thunderbird ESR (cy) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (da) | 153.0.1 | Mozilla Thunderbird ESR (da) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (de) | 153.0.1 | Mozilla Thunderbird ESR (de) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (dsb) | 153.0.1 | Mozilla Thunderbird ESR (dsb) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (el) | 153.0.1 | Mozilla Thunderbird ESR (el) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (en-CA) | 153.0.1 | Mozilla Thunderbird ESR (en-CA) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (en-GB) | 153.0.1 | Mozilla Thunderbird ESR (en-GB) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (en-US) | 153.0.1 | Mozilla Thunderbird ESR (en-US) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (es-AR) | 153.0.1 | Mozilla Thunderbird ESR (es-AR) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (es-ES) | 153.0.1 | Mozilla Thunderbird ESR (es-ES) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (es-MX) | 153.0.1 | Mozilla Thunderbird ESR (es-MX) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (et) | 153.0.1 | Mozilla Thunderbird ESR (et) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (eu) | 153.0.1 | Mozilla Thunderbird ESR (eu) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (fi) | 153.0.1 | Mozilla Thunderbird ESR (fi) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (fr) | 153.0.1 | Mozilla Thunderbird ESR (fr) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (fy-NL) | 153.0.1 | Mozilla Thunderbird ESR (fy-NL) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ga-IE) | 153.0.1 | Mozilla Thunderbird ESR (ga-IE) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (gd) | 153.0.1 | Mozilla Thunderbird ESR (gd) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (gl) | 153.0.1 | Mozilla Thunderbird ESR (gl) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (he) | 153.0.1 | Mozilla Thunderbird ESR (he) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (hr) | 153.0.1 | Mozilla Thunderbird ESR (hr) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (hsb) | 153.0.1 | Mozilla Thunderbird ESR (hsb) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (hu) | 153.0.1 | Mozilla Thunderbird ESR (hu) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (hy-AM) | 153.0.1 | Mozilla Thunderbird ESR (hy-AM) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (id) | 153.0.1 | Mozilla Thunderbird ESR (id) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (is) | 153.0.1 | Mozilla Thunderbird ESR (is) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (it) | 153.0.1 | Mozilla Thunderbird ESR (it) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ja) | 153.0.1 | Mozilla Thunderbird ESR (ja) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ka) | 153.0.1 | Mozilla Thunderbird ESR (ka) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (kab) | 153.0.1 | Mozilla Thunderbird ESR (kab) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (kk) | 153.0.1 | Mozilla Thunderbird ESR (kk) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ko) | 153.0.1 | Mozilla Thunderbird ESR (ko) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (lt) | 153.0.1 | Mozilla Thunderbird ESR (lt) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (lv) | 153.0.1 | Mozilla Thunderbird ESR (lv) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ms) | 153.0.1 | Mozilla Thunderbird ESR (ms) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (nb-NO) | 153.0.1 | Mozilla Thunderbird ESR (nb-NO) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (nl) | 153.0.1 | Mozilla Thunderbird ESR (nl) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (nn-NO) | 153.0.1 | Mozilla Thunderbird ESR (nn-NO) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (pa-IN) | 153.0.1 | Mozilla Thunderbird ESR (pa-IN) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (pl) | 153.0.1 | Mozilla Thunderbird ESR (pl) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (pt-BR) | 153.0.1 | Mozilla Thunderbird ESR (pt-BR) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (pt-PT) | 153.0.1 | Mozilla Thunderbird ESR (pt-PT) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (rm) | 153.0.1 | Mozilla Thunderbird ESR (rm) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ro) | 153.0.1 | Mozilla Thunderbird ESR (ro) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ru) | 153.0.1 | Mozilla Thunderbird ESR (ru) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (sk) | 153.0.1 | Mozilla Thunderbird ESR (sk) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (sl) | 153.0.1 | Mozilla Thunderbird ESR (sl) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (sq) | 153.0.1 | Mozilla Thunderbird ESR (sq) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (sr) | 153.0.1 | Mozilla Thunderbird ESR (sr) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (sv-SE) | 153.0.1 | Mozilla Thunderbird ESR (sv-SE) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (th) | 153.0.1 | Mozilla Thunderbird ESR (th) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (tr) | 153.0.1 | Mozilla Thunderbird ESR (tr) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (uk) | 153.0.1 | Mozilla Thunderbird ESR (uk) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (uz) | 153.0.1 | Mozilla Thunderbird ESR (uz) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (vi) | 153.0.1 | Mozilla Thunderbird ESR (vi) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (zh-CN) | 153.0.1 | Mozilla Thunderbird ESR (zh-CN) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (zh-TW) | 153.0.1 | Mozilla Thunderbird ESR (zh-TW) 153.0.1 | Jul 23, 2026 |
| macOS | |||
| Mozilla Thunderbird | 152.0.1 | Mozilla Thunderbird 152.0.1 | Jun 30, 2026 |
| Linux | |||
| thunderbird · Debian 12.15 (bookworm) | 1:140.13.0esr-2~deb12u1 | DEBIAN-CVE-2026-57962 | Jul 1, 2026 |
| thunderbird · Debian 13.5 (trixie) | 1:140.13.0esr-2~deb13u1 | DEBIAN-CVE-2026-57962 | Jul 1, 2026 |
| thunderbird · Debian 14 | 1:140.13.0esr-1 | DEBIAN-CVE-2026-57962 | Jul 1, 2026 |
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